Questions on Identifying Correct Parallel Structure

1. Which sentence demonstrates correct parallel structure?

A. She enjoys hiking, to swim, and reading novels.
B. The project requires planning, designing, and to implement solutions.
C. He is skilled in coding, debugging, and software testing.
D. The team focused on efficiency, innovation, and to reduce costs.
Answer: C
Explanation: Option C uses consistent gerund forms (coding, debugging, testing) for the list, ensuring
parallelism. Other options mix infinitives (to swim, to implement, to reduce) with gerunds, breaking
parallelism.

2. Which sentence maintains parallel structure in its clauses?

A. The engineer analyzed the data, wrote the report, and was presenting findings.
B. The manager delegated tasks, monitored progress, and provided feedback.
C. The team was designing circuits, testing components, and documentation.
D. She coded the algorithm, tested it, and will deploy it.
Answer: B
Explanation: Option B uses consistent past tense verbs (delegated, monitored, provided) for parallel clauses.
Others mix tenses or forms (was presenting, documentation, will deploy).

3. Which sentence uses parallel structure for its phrases?

A. The software is fast, reliable, and can be customized.
B. The device is compact, efficient, and has durability.
C. The system is secure, scalable, and user-friendly.
D. The design is innovative, practical, and to optimize.
Answer: C
Explanation: Option C uses consistent adjectives (secure, scalable, user-friendly). Options A and B mix
adjectives with verb phrases (can be customized, has durability).

4. Which sentence correctly uses parallel structure in a comparison?

A. Writing code is as challenging as to debug it.
B. Testing software is more time-consuming than documenting processes.
C. Designing circuits requires more skill than to assemble them.
D. Optimizing algorithms is as difficult as hardware troubleshooting.
Answer: B
Explanation: Option B compares gerunds (testing, documenting) consistently. Others mix gerunds with
infinitives (to debug, to assemble) or nouns (hardware troubleshooting).

5. Which sentence has parallel structure in its list of infinitives?

A. The goal is to innovate, to improve, and achieving success.
B. The plan is to analyze data, to develop models, and to present results.
C. The task is to code, to test, and debugging the program.
D. The objective is to design, implementing, and to evaluate systems.
Answer: B
Explanation: Option B uses consistent infinitive phrases (to analyze, to develop, to present). Others mix
infinitives with gerunds or other forms.

6. Which sentence correctly uses parallel structure with correlative conjunctions?

A. Either you must submit the report or presenting it orally.
B. Not only did she code the software, but she also tested it thoroughly.
C. Neither the design was efficient nor reliable in testing.
D. Both analyzing the problem and to propose solutions were required.
Answer: B
 Explanation: Option B uses parallel past tense verbs (did code, tested) with "not only...but also." Others mix
forms or lack parallelism.

7. Which sentence maintains parallelism in a series of noun phrases?

A. The project demands innovation, efficiency, and to be reliable.
B. The system requires speed, accuracy, and scalability.
C. The design prioritizes cost, performance, and being user-friendly.
D. The team valued creativity, to collaborate, and precision.
Answer: B
Explanation: Option B uses consistent nouns (speed, accuracy, scalability). Others mix nouns with infinitives
or gerunds.

8. Which sentence correctly uses parallel structure in a list of prepositional phrases?

A. The engineer worked with dedication, with skill, and with confidence.
B. The team collaborated with enthusiasm, on time, and with accuracy.
C. The project succeeded with planning, by executing, and with monitoring.
D. The system was built with care, on schedule, and reliability.
Answer: A
Explanation: Option A uses consistent prepositional phrases (with + noun). Others mix prepositions or forms
(by executing, reliability).

9. Which sentence demonstrates parallelism in a list of adjectives?

A. The software is fast, reliable, and can scale.
B. The device is durable, portable, and cost-effective.
C. The system is secure, efficient, and allows customization.
D. The design is innovative, practical, and to optimize.
Answer: B
Explanation: Option B uses adjectives (durable, portable, cost-effective) consistently. Others mix adjectives
with verbs or infinitives.

10. Which sentence uses parallel structure with verb phrases?

A. The team plans to design circuits, test components, and documentation.
B. The engineer will analyze data, develop models, and present findings.
C. The project involves coding, testing, and to deploy software.
D. The goal is to innovate, collaborating, and succeed.
Answer: B
Explanation: Option B uses consistent verb phrases (analyze, develop, present). Others mix infinitives,
gerunds, or nouns.

11. Which sentence demonstrates correct parallel structure?

A. The project requires analyzing data, to develop models, and presenting results.
B. The engineer is skilled at coding software, debugging errors, and testing systems.
C. The system is designed for speed, to be reliable, and scalability.
D. The team focused on innovation, collaboration, and to implement solutions.
Answer: B
Explanation: Option B uses consistent gerund phrases (coding, debugging, testing). Others mix gerunds,
infinitives, or nouns.

12. Which sentence maintains parallel structure in its clauses?

A. She designed the circuit, tested components, and was documenting results.
B. He wrote the code, debugged errors, and deployed the software.
C. The team coded the program, tested it, and will optimize it.
D. The engineer analyzed data, developed models, and presenting findings.
Answer: B
 Explanation: Option B uses consistent past tense verbs (wrote, debugged, deployed). Others mix tenses or
forms.

13. Which sentence uses parallel structure for its phrases?

A. The software is efficient, reliable, and can be customized.
B. The device is compact, durable, and has efficiency.
C. The system is fast, scalable, and user-friendly.
D. The design is innovative, practical, and to be optimized.
Answer: C
Explanation: Option C uses consistent adjectives (fast, scalable, user-friendly). Others mix adjectives with
verb phrases or infinitives.

14. Which sentence correctly uses parallel structure in a comparison?

A. Optimizing algorithms is as challenging as to debug software.
B. Designing circuits is more complex than assembling components.
C. Testing software requires more time than to document processes.
D. Writing code is as difficult as to troubleshoot hardware.
Answer: B
Explanation: Option B compares gerunds (designing, assembling) consistently. Others mix gerunds with
infinitives.

15. Which sentence has parallel structure in its list of infinitives?

A. The objective is to design systems, to test components, and implementing solutions.
B. The plan is to analyze data, to develop algorithms, and to present findings.
C. The task is to code, to debug, and deployment.
D. The goal is to innovate, to collaborate, and succeeding.
Answer: B
Explanation: Option B uses consistent infinitive phrases (to analyze, to develop, to present). Others mix
infinitives with gerunds or nouns.

16. Which sentence correctly uses parallel structure with correlative conjunctions?
A. Not only does the system ensure security, but it also provides scalability.
B. Either the engineer must code the program or debugging it.
C. Neither the design is efficient nor scalable in testing.
D. Both analyzing data and to develop models are required.
Answer: A
Explanation: Option A uses parallel verb phrases (does ensure, provides) with "not only...but also." Others
mix forms or lack parallelism.

17. Which sentence maintains parallelism in a series of noun phrases?

A. The project emphasizes innovation, efficiency, and to be reliable.
B. The system requires performance, accuracy, and scalability.
C. The design prioritizes cost, reliability, and being user-friendly.
D. The team valued creativity, collaboration, and to achieve precision.
Answer: B
Explanation: Option B uses consistent nouns (performance, accuracy, scalability). Others mix nouns with
infinitives or gerunds.

18. Which sentence correctly uses parallel structure in a list of prepositional phrases?
A. The team worked with precision, with accuracy, and with confidence.
B. The engineer collaborated with enthusiasm, on schedule, and with dedication.
C. The project succeeded with planning, by executing, and with monitoring.
D. The system was built with care, on time, and reliability.
Answer: A
Explanation: Option A uses consistent prepositional phrases (with + noun). Others mix prepositions or forms.
19. Which sentence demonstrates parallelism in a list of adjectives?
A. The software is fast, reliable, and can scale.
B. The device is compact, portable, and cost-effective.
C. The system is secure, efficient, and allows customization.
D. The design is innovative, practical, and to optimize.
Answer: B
Explanation: Option B uses consistent adjectives (compact, portable, cost-effective). Others mix adjectives
with verbs or infinitives.

20. Which sentence uses parallel structure with verb phrases?

A. The engineer plans to analyze data, develop models, and documentation.
B. The team will design circuits, test components, and implement solutions.
C. The project involves coding, testing, and to deploy software.
D. The goal is to innovate, collaborating, and succeed.
Answer: B
Explanation: Option B uses consistent verb phrases (design, test, implement). Others mix infinitives, gerunds,
or nouns.

21. Which sentence demonstrates correct parallel structure?

A. The project involves analyzing data, to develop models, and presenting results.
B. The engineer excels at coding, debugging, and testing software.
C. The system is designed for speed, reliability, and to be scalable.
D. The team focused on innovation, to collaborate, and implementing solutions.
Answer: B
Explanation: Option B uses consistent gerund phrases (coding, debugging, testing). Others mix gerunds,
infinitives, or other forms.

22. Which sentence maintains parallel structure in its clauses?

A. She analyzed data, wrote reports, and was presenting findings.
B. He coded the software, tested it, and deployed it successfully.
C. The team designed circuits, tested components, and will document results.
D. The engineer optimized algorithms, debugged errors, and presenting findings.
Answer: B
Explanation: Option B uses consistent past tense verbs (coded, tested, deployed). Others mix tenses or
forms.

23. Which sentence uses parallel structure for its phrases?

A. The software is efficient, scalable, and can be customized.
B. The device is durable, portable, and has reliability.
C. The system is secure, reliable, and user-friendly.
D. The design is innovative, practical, and to be optimized.
Answer: C
Explanation: Option C uses consistent adjectives (secure, reliable, user-friendly). Others mix adjectives with
verb phrases or infinitives.

24. Which sentence correctly uses parallel structure in a comparison?

A. Writing code is as challenging as to debug software.
B. Testing systems is more complex than documenting processes.
C. Designing circuits requires more skill than to assemble components.
D. Optimizing algorithms is as difficult as to troubleshoot hardware.
Answer: B
Explanation: Option B compares gerunds (testing, documenting) consistently. Others mix gerunds with
infinitives.
25. Which sentence has parallel structure in its list of infinitives?
A. The goal is to innovate, to improve, and achieving success.
B. The plan is to analyze data, to develop solutions, and to present findings.
C. The task is to code, to test, and debugging software.
D. The objective is to design, implementing, and to evaluate systems.
Answer: B
Explanation: Option B uses consistent infinitive phrases (to analyze, to develop, to present). Others mix
infinitives with gerunds or other forms.

26. Which sentence correctly uses parallel structure with correlative conjunctions?
A. Not only does the system ensure performance, but it also guarantees reliability.
B. Either the engineer must design the circuit or testing it.
C. Neither the software is fast nor scalable in performance.
D. Both analyzing data and to develop algorithms are required.
Answer: A
Explanation: Option A uses parallel verb phrases (does ensure, guarantees) with "not only...but also." Others
mix forms or lack parallelism.

27. Which sentence maintains parallelism in a series of noun phrases?

A. The project demands innovation, efficiency, and to be reliable.
B. The system requires speed, accuracy, and performance.
C. The design prioritizes cost, reliability, and being user-friendly.
D. The team valued creativity, collaboration, and to achieve precision.
Answer: B
Explanation: Option B uses consistent nouns (speed, accuracy, performance). Others mix nouns with
infinitives or gerunds.

28. Which sentence correctly uses parallel structure in a list of prepositional phrases?
A. The engineer worked with skill, with precision, and with dedication.
B. The team collaborated with enthusiasm, on time, and with accuracy.
C. The project succeeded with planning, by executing, and with monitoring.
D. The system was built with care, on schedule, and reliability.
Answer: A
Explanation: Option A uses consistent prepositional phrases (with + noun). Others mix prepositions or forms.

29. Which sentence demonstrates parallelism in a list of adjectives?

A. The software is fast, reliable, and can scale.
B. The device is compact, durable, and cost-effective.
C. The system is secure, efficient, and allows customization.
D. The design is innovative, practical, and to optimize.
Answer: B
Explanation: Option B uses consistent adjectives (compact, durable, cost-effective). Others mix adjectives
with verbs or infinitives.

30. Which sentence uses parallel structure with verb phrases?

A. The team plans to design systems, test components, and documentation.
B. The engineer will analyze data, develop algorithms, and present results.
C. The project involves coding, testing, and to deploy software.
D. The goal is to innovate, collaborating, and succeed.
Answer: B
Explanation: Option B uses consistent verb phrases (analyze, develop, present). Others mix infinitives,
gerunds, or nouns.

31. Which sentence demonstrates correct parallel structure?

A. The project requires analyzing data, to develop solutions, and presenting results.
 B. The engineer is skilled at designing circuits, testing components, and documenting processes.
C. The system is designed for speed, to be reliable, and scalability.
D. The team focused on innovation, to collaborate, and implementing solutions.
Answer: B
Explanation: Option B uses consistent gerund phrases (designing, testing, documenting). Others mix gerunds,
infinitives, or nouns.

32. Which sentence maintains parallel structure in its clauses?

A. She analyzed data, wrote reports, and was presenting findings.
B. He designed the system, tested it, and implemented it successfully.
C. The team coded software, tested components, and will document results.
D. The engineer optimized algorithms, debugged errors, and presenting findings.
Answer: B
Explanation: Option B uses consistent past tense verbs (designed, tested, implemented). Others mix tenses
or forms.

33. Which sentence uses parallel structure for its phrases?

A. The software is efficient, scalable, and can be customized.
B. The device is durable, portable, and has efficiency.
C. The system is secure, reliable, and user-friendly.
D. The design is innovative, practical, and to be optimized.
Answer: C
Explanation: Option C uses consistent adjectives (secure, reliable, user-friendly). Others mix adjectives with
verb phrases or infinitives.

34. Which sentence correctly uses parallel structure in a comparison?

A. Optimizing algorithms is as challenging as to debug software.
B. Designing systems is more complex than testing components.
C. Testing software requires more time than to document processes.
D. Writing code is as difficult as to troubleshoot hardware.
Answer: B
Explanation: Option B compares gerunds (designing, testing) consistently. Others mix gerunds with
infinitives.

35. Which sentence has parallel structure in its list of infinitives?

A. The goal is to innovate, to improve, and achieving success.
B. The plan is to analyze data, to develop models, and to present findings.
C. The task is to code, to test, and debugging software.
D. The objective is to design, implementing, and to evaluate systems.
Answer: B
Explanation: Option B uses consistent infinitive phrases (to analyze, to develop, to present). Others mix
infinitives with gerunds or other forms.

36. Which sentence correctly uses parallel structure with correlative conjunctions?
A. Not only does the system ensure security, but it also provides scalability.
B. Either the engineer must code the program or debugging it.
C. Neither the software is fast nor scalable in performance.
D. Both analyzing data and to develop algorithms are required.
Answer: A
Explanation: Option A uses parallel verb phrases (does ensure, provides) with "not only...but also." Others
mix forms or lack parallelism.

37. Which sentence maintains parallelism in a series of noun phrases?

A. The project demands innovation, efficiency, and to be reliable.
B. The system requires performance, accuracy, and reliability.
 C. The design prioritizes cost, scalability, and being user-friendly.
D. The team valued creativity, collaboration, and to achieve precision.
Answer: B
Explanation: Option B uses consistent nouns (performance, accuracy, reliability). Others mix nouns with
infinitives or gerunds.

38. Which sentence correctly uses parallel structure in a list of prepositional phrases?
A. The engineer worked with skill, with accuracy, and with confidence.
B. The team collaborated with enthusiasm, on schedule, and with dedication.
C. The project succeeded with planning, by executing, and with monitoring.
D. The system was built with care, on time, and reliability.
Answer: A
Explanation: Option A uses consistent prepositional phrases (with + noun). Others mix prepositions or forms.

39. Which sentence demonstrates parallelism in a list of adjectives?

A. The software is fast, reliable, and can scale.
B. The device is compact, durable, and cost-effective.
C. The system is secure, efficient, and allows customization.
D. The design is innovative, practical, and to optimize.
Answer: B
Explanation: Option B uses consistent adjectives (compact, durable, cost-effective). Others mix adjectives
with verbs or infinitives.

40. Which sentence uses parallel structure with verb phrases?

A. The team plans to design systems, test components, and documentation.
B. The engineer will analyze data, develop algorithms, and present results.
C. The project involves coding, testing, and to deploy software.
D. The goal is to innovate, collaborating, and succeed.
Answer: B
Explanation: Option B uses consistent verb phrases (analyze, develop, present). Others mix infinitives,
gerunds, or nouns.

41. Which sentence demonstrates correct parallel structure?

A. The project requires analyzing data, to develop models, and presenting results.
B. The engineer excels at coding software, debugging errors, and testing systems.
C. The system is designed for speed, to be reliable, and scalability.
D. The team focused on innovation, to collaborate, and implementing solutions.
Answer: B
Explanation: Option B uses consistent gerund phrases (coding, debugging, testing). Others mix gerunds,
infinitives, or nouns.

42. Which sentence maintains parallel structure in its clauses?

A. She analyzed data, wrote reports, and was presenting findings.
B. He designed systems, tested components, and implemented solutions.
C. The team coded software, tested it, and will document results.
D. The engineer optimized algorithms, debugged errors, and presenting findings.
Answer: B
Explanation: Option B uses consistent past tense verbs (designed, tested, implemented). Others mix tenses
or forms.

43. Which sentence uses parallel structure for its phrases?

A. The software is efficient, scalable, and can be customized.
B. The device is durable, portable, and has reliability.
C. The system is secure, reliable, and user-friendly.
D. The design is innovative, practical, and to be optimized.
 Answer: C
Explanation: Option C uses consistent adjectives (secure, reliable, user-friendly). Others mix adjectives with
verb phrases or infinitives.

44. Which sentence correctly uses parallel structure in a comparison?

A. Optimizing algorithms is as challenging as to debug software.
B. Designing systems is more complex than testing components.
C. Testing software requires more time than to document processes.
D. Writing code is as difficult as to troubleshoot hardware.
Answer: B
Explanation: Option B compares gerunds (designing, testing) consistently. Others mix gerunds with
infinitives.

45. Which sentence has parallel structure in its list of infinitives?

A. The goal is to innovate, to improve, and achieving success.
B. The plan is to analyze data, to develop algorithms, and to present results.
C. The task is to code, to test, and debugging software.
D. The objective is to design, implementing, and to evaluate systems.
Answer: B
Explanation: Option B uses consistent infinitive phrases (to analyze, to develop, to present). Others mix
infinitives with gerunds or other forms.

46. Which sentence correctly uses parallel structure with correlative conjunctions?
A. Not only does the system ensure performance, but it also guarantees scalability.
B. Either the engineer must code the programwednesday, october 1, 2025
System: program or debugging it.
C. Neither the software is fast nor scalable in performance.
D. Both analyzing data and to develop algorithms are required.
Answer: A
Explanation: Option A uses parallel verb phrases (does ensure, guarantees) with "not only...but also." Others
mix forms or lack parallelism.

47. Which sentence maintains parallelism in a series of noun phrases?

A. The project emphasizes innovation, efficiency, and to be reliable.
B. The system requires speed, accuracy, and performance.
C. The design prioritizes cost, reliability, and being user-friendly.
D. The team valued creativity, collaboration, and to achieve precision.
Answer: B
Explanation: Option B uses consistent nouns (speed, accuracy, performance). Others mix nouns with
infinitives or gerunds.

48. Which sentence correctly uses parallel structure in a list of prepositional phrases?
A. The engineer worked with skill, with precision, and with dedication.
B. The team collaborated with enthusiasm, on schedule, and with accuracy.
C. The project succeeded with planning, by executing, and with monitoring.
D. The system was built with care, on time, and reliability.
Answer: A
Explanation: Option A uses consistent prepositional phrases (with + noun). Others mix prepositions or forms.

49. Which sentence demonstrates parallelism in a list of adjectives?

A. The software is fast, reliable, and can scale.
B. The device is compact, durable, and cost-effective.
C. The system is secure, efficient, and allows customization.
D. The design is innovative, practical, and to optimize.
Answer: B
 Explanation: Option B uses consistent adjectives (compact, durable, cost-effective). Others mix adjectives
with verbs or infinitives.

50. Which sentence uses parallel structure with verb phrases?

A. The team plans to design systems, test components, and documentation.
B. The engineer will analyze data, develop algorithms, and present results.
C. The project involves coding, testing, and to deploy software.
D. The goal is to innovate, collaborating, and succeed.
Answer: B
Explanation: Option B uses consistent verb phrases (analyze, develop, present). Others mix infinitives,
gerunds, or nouns.

51. Which sentence demonstrates correct parallel structure?

A. The project requires analyzing data, to develop solutions, and presenting results.
B. The engineer excels at designing circuits, testing components, and documenting processes.
C. The system is designed for speed, to be reliable, and scalability.
D. The team focused on innovation, to collaborate, and implementing solutions.
Answer: B
Explanation: Option B uses consistent gerund phrases (designing, testing, documenting). Others mix gerunds,
infinitives, or nouns.

52. Which sentence maintains parallel structure in its clauses?

A. She analyzed data, wrote reports, and was presenting findings.
B. He coded software, tested components, and deployed systems.
C. The team designed circuits, tested it, and will document results.
D. The engineer optimized algorithms, debugged errors, and presenting findings.
Answer: B
Explanation: Option B uses consistent past tense verbs (coded, tested, deployed). Others mix tenses or
forms.

53. Which sentence uses parallel structure for its phrases?

A. The software is efficient, scalable, and can be customized.
B. The device is durable, portable, and has reliability.
C. The system is secure, reliable, and user-friendly.
D. The design is innovative, practical, and to be optimized.
Answer: C
Explanation: Option C uses consistent adjectives (secure, reliable, user-friendly). Others mix adjectives with
verb phrases or infinitives.

54. Which sentence correctly uses parallel structure in a comparison?

A. Optimizing algorithms is as challenging as to debug software.
B. Designing systems is more complex than testing components.
C. Testing software requires more time than to document processes.
D. Writing code is as difficult as to troubleshoot hardware.
Answer: B
Explanation: Option B compares gerunds (designing, testing) consistently. Others mix gerunds with
infinitives.

55. Which sentence has parallel structure in its list of infinitives?

A. The goal is to innovate, to improve, and achieving success.
B. The plan is to analyze data, to develop models, and to present results.
C. The task is to code, to test, and debugging software.
D. The objective is to design, implementing, and to evaluate systems.
Answer: B
 Explanation: Option B uses consistent infinitive phrases (to analyze, to develop, to present). Others mix
infinitives with gerunds or other forms.

56. Which sentence correctly uses parallel structure with correlative conjunctions?
A. Not only does the system ensure security, but it also provides scalability.
B. Either the engineer must code the program or debugging it.
C. Neither the software is fast nor scalable in performance.
D. Both analyzing data and to develop algorithms are required.
Answer: A
Explanation: Option A uses parallel verb phrases (does ensure, provides) with "not only...but also." Others
mix forms or lack parallelism.

57. Which sentence maintains parallelism in a series of noun phrases?

A. The project demands innovation, efficiency, and to be reliable.
B. The system requires speed, accuracy, and performance.
C. The design prioritizes cost, reliability, and being user-friendly.
D. The team valued creativity, collaboration, and to achieve precision.
Answer: B
Explanation: Option B uses consistent nouns (speed, accuracy, performance). Others mix nouns with
infinitives or gerunds.

58. Which sentence correctly uses parallel structure in a list of prepositional phrases?
A. The engineer worked with skill, with precision, and with dedication.
B. The team collaborated with enthusiasm, on schedule, and with accuracy.
C. The project succeeded with planning, by executing, and with monitoring.
D. The system was built with care, on time, and reliability.
Answer: A
Explanation: Option A uses consistent prepositional phrases (with + noun). Others mix prepositions or forms.

59. Which sentence demonstrates parallelism in a list of adjectives?

A. The software is fast, reliable, and can scale.
B. The device is compact, durable, and cost-effective.
C. The system is secure, efficient, and allows customization.
D. The design is innovative, practical, and to optimize.
Answer: B
Explanation: Option B uses consistent adjectives (compact, durable, cost-effective). Others mix adjectives
with verbs or infinitives.

60. Which sentence uses parallel structure with verb phrases?

A. The team plans to design systems, test components, and documentation.
B. The engineer will analyze data, develop algorithms, and present results.
C. The project involves coding, testing, and to deploy software.
D. The goal is to innovate, collaborating, and succeed.
Answer: B
Explanation: Option B uses consistent verb phrases (analyze, develop, present). Others mix infinitives,
gerunds, or nouns.

61. Which sentence demonstrates correct parallel structure?

A. The project requires analyzing data, to develop solutions, and presenting results.
B. The engineer excels at coding software, debugging errors, and testing systems.
C. The system is designed for speed, to be reliable, and scalability.
D. The team focused on innovation, to collaborate, and implementing solutions.
Answer: B
Explanation: Option B uses consistent gerund phrases (coding, debugging, testing). Others mix gerunds,
infinitives, or nouns.
62. Which sentence maintains parallel structure in its clauses?
A. She analyzed data, wrote reports, and was presenting findings.
B. He designed systems, tested components, and implemented solutions.
C. The team coded software, tested it, and will document results.
D. The engineer optimized algorithms, debugged errors, and presenting findings.
Answer: B
Explanation: Option B uses consistent past tense verbs (designed, tested, implemented). Others mix tenses
or forms.

63. Which sentence uses parallel structure for its phrases?

A. The software is efficient, scalable, and can be customized.
B. The device is durable, portable, and has reliability.
C. The system is secure, reliable, and user-friendly.
D. The design is innovative, practical, and to be optimized.
Answer: C
Explanation: Option C uses consistent adjectives (secure, reliable, user-friendly). Others mix adjectives with
verb phrases or infinitives.

64. Which sentence correctly uses parallel structure in a comparison?

A. Optimizing algorithms is as challenging as to debug software.
B. Designing systems is more complex than testing components.
C. Testing software requires more time than to document processes.
D. Writing code is as difficult as to troubleshoot hardware.
Answer: B
Explanation: Option B compares gerunds (designing, testing) consistently. Others mix gerunds with
infinitives.

65. Which sentence has parallel structure in its list of infinitives?

A. The goal is to innovate, to improve, and achieving success.
B. The plan is to analyze data, to develop algorithms, and to present results.
C. The task is to code, to test, and debugging software.
D. The objective is to design, implementing, and to evaluate systems.
Answer: B
Explanation: Option B uses consistent infinitive phrases (to analyze, to develop, to present). Others mix
infinitives with gerunds or other forms.

66. Which sentence correctly uses parallel structure with correlative conjunctions?
A. Not only does the system ensure performance, but it also guarantees scalability.
B. Either the engineer must code the program or debugging it.
C. Neither the software is fast nor scalable in performance.
D. Both analyzing data and to develop algorithms are required.
Answer: A
Explanation: Option A uses parallel verb phrases (does ensure, guarantees) with "not only...but also." Others
mix forms or lack parallelism.

67. Which sentence maintains parallelism in a series of noun phrases?

A. The project demands innovation, efficiency, and to be reliable.
B. The system requires speed, accuracy, and performance.
C. The design prioritizes cost, reliability, and being user-friendly.
D. The team valued creativity, collaboration, and to achieve precision.
Answer: B
Explanation: Option B uses consistent nouns (speed, accuracy, performance). Others mix nouns with
infinitives or gerunds.
68. Which sentence correctly uses parallel structure in a list of prepositional phrases?
A. The engineer worked with skill, with precision, and with dedication.
B. The team collaborated with enthusiasm, on schedule, and with accuracy.
C. The project succeeded with planning, by executing, and with monitoring.
D. The system was built with care, on time, and reliability.
Answer: A
Explanation: Option A uses consistent prepositional phrases (with + noun). Others mix prepositions or forms.

69. Which sentence demonstrates parallelism in a list of adjectives?

A. The software is fast, reliable, and can scale.
B. The device is compact, durable, and cost-effective.
C. The system is secure, efficient, and allows customization.
D. The design is innovative, practical, and to optimize.
Answer: B
Explanation: Option B uses consistent adjectives (compact, durable, cost-effective). Others mix adjectives
with verbs or infinitives.

70. Which sentence uses parallel structure with verb phrases?

A. The team plans to design systems, test components, and documentation.
B. The engineer will analyze data, develop algorithms, and present results.
C. The project involves coding, testing, and to deploy software.
D. The goal is to innovate, collaborating, and succeed.
Answer: B
Explanation: Option B uses consistent verb phrases (analyze, develop, present). Others mix infinitives,
gerunds, or nouns.

71. Which sentence demonstrates correct parallel structure?

A. The project requires analyzing data, to develop solutions, and presenting results.
B. The engineer excels at coding software, debugging errors, and testing systems.
C. The system is designed for speed, to be reliable, and scalability.
D. The team focused on innovation, to collaborate, and implementing solutions.
Answer: B
Explanation: Option B uses consistent gerund phrases (coding, debugging, testing). Others mix gerunds,
infinitives, or nouns.

72. Which sentence maintains parallel structure in its clauses?

A. She analyzed data, wrote reports, and was presenting findings.
B. He designed systems, tested components, and implemented solutions.
C. The team coded software, tested it, and will document results.
D. The engineer optimized algorithms, debugged errors, and presenting findings.
Answer: B
Explanation: Option B uses consistent past tense verbs (designed, tested, implemented). Others mix tenses
or forms.

73. Which sentence uses parallel structure for its phrases?

A. The software is efficient, scalable, and can be customized.
B. The device is durable, portable, and has reliability.
C. The system is secure, reliable, and user-friendly.
D. The design is innovative, practical, and to be optimized.
Answer: C
Explanation: Option C uses consistent adjectives (secure, reliable, user-friendly). Others mix adjectives with
verb phrases or infinitives.

74. Which sentence correctly uses parallel structure in a comparison?

A. Optimizing algorithms is as challenging as to debug software.
 B. Designing systems is more complex than testing components.
C. Testing software requires more time than to document processes.
D. Writing code is as difficult as to troubleshoot hardware.
Answer: B
Explanation: Option B compares gerunds (designing, testing) consistently. Others mix gerunds with
infinitives.

75. Which sentence has parallel structure in its list of infinitives?

A. The goal is to innovate, to improve, and achieving success.
B. The plan is to analyze data, to develop algorithms, and to present results.
C. The task is to code, to test, and debugging software.
D. The objective is to design, implementing, and to evaluate systems.
Answer: B
Explanation: Option B uses consistent infinitive phrases (to analyze, to develop, to present). Others mix
infinitives with gerunds or other forms.

76. Which sentence correctly uses parallel structure with correlative conjunctions?
A. Not only does the system ensure performance, but it also guarantees scalability.
B. Either the engineer must code the program or debugging it.
C. Neither the software is fast nor scalable in performance.
D. Both analyzing data and to develop algorithms are required.
Answer: A
Explanation: Option A uses parallel verb phrases (does ensure, guarantees) with "not only...but also." Others
mix forms or lack parallelism.

77. Which sentence maintains parallelism in a series of noun phrases?

A. The project demands innovation, efficiency, and to be reliable.
B. The system requires speed, accuracy, and performance.
C. The design prioritizes cost, reliability, and being user-friendly.
D. The team valued creativity, collaboration, and to achieve precision.
Answer: B
Explanation: Option B uses consistent nouns (speed, accuracy, performance). Others mix nouns with
infinitives or gerunds.

78. Which sentence correctly uses parallel structure in a list of prepositional phrases?
A. The engineer worked with skill, with precision, and with dedication.
B. The team collaborated with enthusiasm, on schedule, and with accuracy.
C. The project succeeded with planning, by executing, and with monitoring.
D. The system was built with care, on time, and reliability.
Answer: A
Explanation: Option A uses consistent prepositional phrases (with + noun). Others mix prepositions or forms.

79. Which sentence demonstrates parallelism in a list of adjectives?

A. The software is fast, reliable, and can scale.
B. The device is compact, durable, and cost-effective.
C. The system is secure, efficient, and allows customization.
D. The design is innovative, practical, and to optimize.
Answer: B
Explanation: Option B uses consistent adjectives (compact, durable, cost-effective). Others mix adjectives
with verbs or infinitives.

80. Which sentence uses parallel structure with verb phrases?

A. The team plans to design systems, test components, and documentation.
B. The engineer will analyze data, develop algorithms, and present results.
C. The project involves coding, testing, and to deploy software.
 D. The goal is to innovate, collaborating, and succeed.
Answer: B
Explanation: Option B uses consistent verb phrases (analyze, develop, present). Others mix infinitives,
gerunds, or nouns.

81. Which sentence demonstrates correct parallel structure?

A. The project requires analyzing data, to develop solutions, and presenting results.
B. The engineer excels at coding software, debugging errors, and testing systems.
C. The system is designed for speed, to be reliable, and scalability.
D. The team focused on innovation, to collaborate, and implementing solutions.
Answer: B
Explanation: Option B uses consistent gerund phrases (coding, debugging, testing). Others mix gerunds,
infinitives, or nouns.

82. Which sentence maintains parallel structure in its clauses?

A. She analyzed data, wrote reports, and was presenting findings.
B. He designed systems, tested components, and implemented solutions.
C. The team coded software, tested it, and will document results.
D. The engineer optimized algorithms, debugged errors, and presenting findings.
Answer: B
Explanation: Option B uses consistent past tense verbs (designed, tested, implemented). Others mix tenses
or forms.

83. Which sentence uses parallel structure for its phrases?

A. The software is efficient, scalable, and can be customized.
B. The device is durable, portable, and has reliability.
C. The system is secure, reliable, and user-friendly.
D. The design is innovative, practical, and to be optimized.
Answer: C
Explanation: Option C uses consistent adjectives (secure, reliable, user-friendly). Others mix adjectives with
verb phrases or infinitives.

84. Which sentence correctly uses parallel structure in a comparison?

A. Optimizing algorithms is as challenging as to debug software.
B. Designing systems is more complex than testing components.
C. Testing software requires more time than to document processes.
D. Writing code is as difficult as to troubleshoot hardware.
Answer: B
Explanation: Option B compares gerunds (designing, testing) consistently. Others mix gerunds with
infinitives.

85. Which sentence has parallel structure in its list of infinitives?

A. The goal is to innovate, to improve, and achieving success.
B. The plan is to analyze data, to develop algorithms, and to present results.
C. The task is to code, to test, and debugging software.
D. The objective is to design, implementing, and to evaluate systems.
Answer: B
Explanation: Option B uses consistent infinitive phrases (to analyze, to develop, to present). Others mix
infinitives with gerunds or other forms.

86. Which sentence correctly uses parallel structure with correlative conjunctions?
A. Not only does the system ensure performance, but it also guarantees scalability.
B. Either the engineer must code the program or debugging it.
C. Neither the software is fast nor scalable in performance.
D. Both analyzing data and to develop algorithms are required.
 Answer: A
Explanation: Option A uses parallel verb phrases (does ensure, guarantees) with "not only...but also." Others
mix forms or lack parallelism.

87. Which sentence maintains parallelism in a series of noun phrases?

A. The project demands innovation, efficiency, and to be reliable.
B. The system requires speed, accuracy, and performance.
C. The design prioritizes cost, reliability, and being user-friendly.
D. The team valued creativity, collaboration, and to achieve precision.
Answer: B
Explanation: Option B uses consistent nouns (speed, accuracy, performance). Others mix nouns with
infinitives or gerunds.

88. Which sentence correctly uses parallel structure in a list of prepositional phrases?
A. The engineer worked with skill, with precision, and with dedication.
B. The team collaborated with enthusiasm, on schedule, and with accuracy.
C. The project succeeded with planning, by executing, and with monitoring.
D. The system was built with care, on time, and reliability.
Answer: A
Explanation: Option A uses consistent prepositional phrases (with + noun). Others mix prepositions or forms.

89. Which sentence demonstrates parallelism in a list of adjectives?

A. The software is fast, reliable, and can scale.
B. The device is compact, durable, and cost-effective.
C. The system is secure, efficient, and allows customization.
D. The design is innovative, practical, and to optimize.
Answer: B
Explanation: Option B uses consistent adjectives (compact, durable, cost-effective). Others mix adjectives
with verbs or infinitives.

90. Which sentence uses parallel structure with verb phrases?

A. The team plans to design systems, test components, and documentation.
B. The engineer will analyze data, develop algorithms, and present results.
C. The project involves coding, testing, and to deploy software.
D. The goal is to innovate, collaborating, and succeed.
Answer: B
Explanation: Option B uses consistent verb phrases (analyze, develop, present). Others mix infinitives,
gerunds, or nouns.

91. Which sentence demonstrates correct parallel structure?

A. The project requires analyzing data, to develop solutions, and presenting results.
B. The engineer excels at coding software, debugging errors, and testing systems.
C. The system is designed for speed, to be reliable, and scalability.
D. The team focused on innovation, to collaborate, and implementing solutions.
Answer: B
Explanation: Option B uses consistent gerund phrases (coding, debugging, testing). Others mix gerunds,
infinitives, or nouns.

92. Which sentence maintains parallel structure in its clauses?

A. She analyzed data, wrote reports, and was presenting findings.
B. He designed systems, tested components, and implemented solutions.
C. The team coded software, tested it, and will document results.
D. The engineer optimized algorithms, debugged errors, and presenting findings.
Answer: B
 Explanation: Option B uses consistent past tense verbs (designed, tested, implemented). Others mix tenses
or forms.

93. Which sentence uses parallel structure for its phrases?

A. The software is efficient, scalable, and can be customized.
B. The device is durable, portable, and has reliability.
C. The system is secure, reliable, and user-friendly.
D. The design is innovative, practical, and to be optimized.
Answer: C
Explanation: Option C uses consistent adjectives (secure, reliable, user-friendly). Others mix adjectives with
verb phrases or infinitives.

94. Which sentence correctly uses parallel structure in a comparison?

A. Optimizing algorithms is as challenging as to debug software.
B. Designing systems is more complex than testing components.
C. Testing software requires more time than to document processes.
D. Writing code is as difficult as to troubleshoot hardware.
Answer: B
Explanation: Option B compares gerunds (designing, testing) consistently. Others mix gerunds with
infinitives.

95. Which sentence has parallel structure in its list of infinitives?

A. The goal is to innovate, to improve, and achieving success.
B. The plan is to analyze data, to develop algorithms, and to present results.
C. The task is to code, to test, and debugging software.
D. The objective is to design, implementing, and to evaluate systems.
Answer: B
Explanation: Option B uses consistent infinitive phrases (to analyze, to develop, to present). Others mix
infinitives with gerunds or other forms.

96. Which sentence correctly uses parallel structure with correlative conjunctions?
A. Not only does the system ensure performance, but it also guarantees scalability.
B. Either the engineer must code the program or debugging it.
C. Neither the software is fast nor scalable in performance.
D. Both analyzing data and to develop algorithms are required.
Answer: A
Explanation: Option A uses parallel verb phrases (does ensure, guarantees) with "not only...but also." Others
mix forms or lack parallelism.

97. Which sentence maintains parallelism in a series of noun phrases?

A. The project demands innovation, efficiency, and to be reliable.
B. The system requires speed, accuracy, and performance.
C. The design prioritizes cost, reliability, and being user-friendly.
D. The team valued creativity, collaboration, and to achieve precision.
Answer: B
Explanation: Option B uses consistent nouns (speed, accuracy, performance). Others mix nouns with
infinitives or gerunds.

98. Which sentence correctly uses parallel structure in a list of prepositional phrases?
A. The engineer worked with skill, with precision, and with dedication.
B. The team collaborated with enthusiasm, on schedule, and with accuracy.
C. The project succeeded with planning, by executing, and with monitoring.
D. The system was built with care, on time, and reliability.
Answer: A
Explanation: Option A uses consistent prepositional phrases (with + noun). Others mix prepositions or forms.
99. Which sentence demonstrates parallelism in a list of adjectives?
A. The software is fast, reliable, and can scale.
B. The device is compact, durable, and cost-effective.
C. The system is secure, efficient, and allows customization.
D. The design is innovative, practical, and to optimize.
Answer: B
Explanation: Option B uses consistent adjectives (compact, durable, cost-effective). Others mix adjectives
with verbs or infinitives.

100. Which sentence uses parallel structure with verb phrases?

A. The team plans to design systems, test components, and documentation.
B. The engineer will analyze data, develop algorithms, and present results.
C. The project involves coding, testing, and to deploy software.
D. The goal is to innovate, collaborating, and succeed.
Answer: B
Explanation: Option B uses consistent verb phrases (analyze, develop, present). Others mix infinitives,
gerunds, or nouns.