English Grammar & Syntax Quiz: Parallel Structure In Descriptions
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Parallel Structure In DescriptionsQuestion 1 of 10

Draft job description: "The outreach coordinator schedules weekly interviews, monitoring applicant records, and is responsible for preparing monthly reports."

Which revision preserves all three duties while making their grammatical structure parallel?

The outreach coordinator schedules weekly interviews, monitors applicant records, and prepares monthly reports.
The outreach coordinator is scheduling weekly interviews, monitors applicant records, and prepares monthly reports.
The outreach coordinator schedules weekly interviews, monitoring applicant records, and the preparation of monthly reports.
The outreach coordinator is responsible for scheduling weekly interviews, monitors applicant records, and preparing monthly reports.
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English Grammar & Syntax Quiz

English Grammar & Syntax Quiz: Parallel Structure In Descriptions

Practice Parallel Structure In Descriptions in English Grammar & Syntax with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Parallel Structure In Descriptions, giving you a quick way to practice the rules, question types, and explanations that matter most for English Grammar & Syntax.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

Draft job description: "The outreach coordinator schedules weekly interviews, monitoring applicant records, and is responsible for preparing monthly reports."

Which revision preserves all three duties while making their grammatical structure parallel?

  1. The outreach coordinator schedules weekly interviews, monitors applicant records, and prepares monthly reports. (correct answer)
  2. The outreach coordinator is scheduling weekly interviews, monitors applicant records, and prepares monthly reports.
  3. The outreach coordinator schedules weekly interviews, monitoring applicant records, and the preparation of monthly reports.
  4. The outreach coordinator is responsible for scheduling weekly interviews, monitors applicant records, and preparing monthly reports.
Explanation: When a sentence lists multiple duties or actions performed by the same subject, grammatical parallelism requires that each item in the list use the same grammatical form. In job descriptions especially, you'll often see mixed constructions — a telltale sign that parallelism has broken down. Your job is to identify the base structure and make every element match it. The original draft mixes three different forms: a simple present verb ("schedules"), a participial phrase ("monitoring"), and a predicate adjective construction ("is responsible for preparing"). These don't belong in the same list. The cleanest fix uses simple present tense for all three duties: schedules, monitors, prepares. That's exactly what A does — it keeps all three duties intact and delivers them in identical grammatical form. A is the correct answer. B fails because it opens with a progressive form ("is scheduling") and then shifts to simple present ("monitors," "prepares") — three items, two different verb forms. C preserves "schedules" and adds "monitoring" (a participle), but then switches to a noun phrase ("the preparation of monthly reports"), creating three grammatically mismatched items. The mixing of verb and noun forms is the classic parallelism trap. D embeds the first duty inside "is responsible for scheduling," then abruptly shifts back to finite verbs ("monitors," "preparing"), violating the parallel structure it seemed to promise. A useful strategy: when checking for parallelism, mentally strip each list item down to its core form and line them up. If they all look the same — all base verbs, all gerunds, all infinitives — you have parallelism. If they look different, something needs to change.

Question 2

A position announcement must identify three requirements: entering records accurately, communicating policy changes clearly, and resolving complaints tactfully.

Which sentence expresses the three requirements in parallel form without changing their meaning?

  1. This role requires accuracy when entering records, communicating policy changes clearly, and the ability to resolve complaints tactfully.
  2. This role requires entering records accurately, communicating policy changes clearly, and resolving complaints tactfully. (correct answer)
  3. This role requires accurate record entry, communicating policy changes clearly, and to resolve complaints with tact.
  4. This role requires entering records accurately, clear communication of policy changes, and resolves complaints tactfully.
Explanation: When a sentence lists multiple items, those items must follow parallel structure — meaning each element uses the same grammatical form. Think of it like a series of train cars: they all need the same coupling to connect properly. When you spot a list in a sentence, immediately ask yourself whether each item is the same part of speech or follows the same grammatical pattern. The original passage presents three requirements as gerund phrases: entering records accurately, communicating policy changes clearly, and resolving complaints tactfully. Any rewritten version must preserve all three in that same gerund (-ing verb) form. Answer B does exactly this — "entering records accurately, communicating policy changes clearly, and resolving complaints tactfully" maintains consistent gerund phrases across all three items while keeping the original meaning intact. Answer A breaks the pattern by replacing the first gerund with a noun phrase ("accuracy when entering records"), creating a mismatch with the two gerund phrases that follow. Answer C mixes three different forms: a noun phrase ("accurate record entry"), a gerund phrase ("communicating policy changes clearly"), and an infinitive ("to resolve complaints with tact") — three different grammatical structures in one list. Answer D starts with two gerund phrases but then switches the third to a conjugated verb ("resolves complaints tactfully"), which is grammatically inconsistent and changes the sentence's intended meaning. A quick strategy: whenever you see a list, underline each item and label its grammatical form. If the labels don't match, the structure isn't parallel. On grammar exams, mixed lists — especially those sneaking in one noun phrase or infinitive among gerunds — are the most common parallelism trap.

Question 3

A supervisor wants to emphasize two equally important technician duties: calibrating every sensor before testing and documenting every adjustment afterward.

Which of the following correctly completes the sentence "The technician not only  " so that the two duties are placed in parallel positions using the correlative conjunction pair "not only … but also"?

  1. each sensor is calibrated before testing but also documents every adjustment afterward.
  2. is responsible for calibrating each sensor before testing but also documents every adjustment afterward.
  3. calibrating each sensor before testing but also the documentation of every adjustment afterward.
  4. calibrates each sensor before testing but also documents every adjustment afterward. (correct answer)
Explanation: When you see a correlative conjunction pair like "not only … but also," your job is to check that the grammatical structure following not only matches the structure following but also. This is the parallelism rule: both elements must be the same part of speech or the same grammatical form. In this sentence, "The technician not only  ," whatever follows not only must pair cleanly with whatever follows but also. The subject is already established — "The technician" — so both halves just need a verb phrase in the same form. The cleanest match is two simple verb phrases: calibrates each sensor before testing and documents every adjustment afterward. Both are present-tense verbs with their objects, making them perfectly parallel. That's why D is correct. Choice A breaks the structure entirely by introducing a new subject ("each sensor is calibrated"), turning the second half into a passive clause that doesn't match the active verb in the first half — and it mismatches grammatically with the opening subject "The technician." Choice B creates an awkward and unparallel pair: "is responsible for calibrating" (a prepositional-style construction) versus "documents" (a simple verb). These don't match in form or weight. Choice C pairs a gerund phrase ("calibrating each sensor") with a noun phrase ("the documentation of every adjustment"), which are different grammatical categories. Neither half is a proper verb phrase continuing from "The technician," leaving the sentence without a working predicate. Study tip: When testing parallelism with correlative conjunctions, mentally isolate what comes after each conjunction and ask: "Are these the same grammatical type?" If not, the sentence fails the parallel test.

Question 4

Responsibilities include:

  • evaluating vendor proposals;
  • negotiating contract terms;
  • [revising the delivery schedule and tracking supplier results].

Which replacement for the bracketed item makes the list parallel at the list level and within the final item?

  1. coordinating scheduled deliveries and monitoring supplier performance. (correct answer)
  2. coordination of scheduled deliveries and monitoring supplier performance.
  3. coordinating scheduled deliveries and to monitor supplier performance.
  4. scheduled deliveries are coordinated and monitoring supplier performance.
Explanation: When a list uses parallel structure, every item must follow the same grammatical form. Here, the first two bullets use gerund phrases ("evaluating vendor proposals" and "negotiating contract terms"), so the final bullet must open with a gerund as well. But parallelism has a second layer in this question: within the final bullet, the two joined actions must also match each other grammatically. Choice A, "coordinating scheduled deliveries and monitoring supplier performance," is correct on both counts. It opens with the gerund "coordinating" to match the list-level pattern, and it pairs two gerunds internally ("coordinating... and monitoring"), making the compound phrase internally parallel as well. Choice B fails at the list level. "Coordination of scheduled deliveries" uses a noun phrase rather than a gerund phrase, breaking the pattern established by "evaluating" and "negotiating." It also mixes a noun phrase with a gerund ("monitoring"), creating an internal mismatch. Choice C opens correctly with a gerund ("coordinating") but then shifts to an infinitive ("to monitor") inside the final bullet. This internal inconsistency breaks the within-item parallelism the question specifically asks you to maintain. Choice D abandons gerund structure entirely, turning the item into a clause ("scheduled deliveries are coordinated"), which is grammatically incompatible with the rest of the list and also leaves the internal pairing inconsistent. A useful strategy: when checking list parallelism, do two passes — first confirm every bullet opens with the same form, then zoom into any compound structures within a bullet and verify those elements match each other too.

Question 5

An analyst's performance plan identifies three goals: reducing delays, improving accuracy, and making sure that reports arrive before the deadline.

Which sentence presents the three goals in parallel structure while preserving their intended meaning?

  1. The analyst's goals are to reduce delays, improving accuracy, and reports that arrive before the deadline.
  2. The analyst's goals are reducing delays, to improve accuracy, and ensuring that reports arrive before the deadline.
  3. The analyst's goals are the reduction of delays, improving accuracy, and to ensure reports arrive before the deadline.
  4. The analyst's goals are to reduce delays, improve accuracy, and ensure reports arrive before the deadline. (correct answer)
Explanation: When a sentence lists multiple items, they must all follow the same grammatical form — this is called parallel structure. Whenever you see a list of goals, actions, or ideas, ask yourself: are all items in the same form (all infinitives, all gerunds, all noun phrases)? In this sentence, the three goals are listed after "The analyst's goals are," which sets up a predicate. The cleanest parallel structure uses infinitive phrases (to + base verb) for each item in the list. Answer D does exactly this: "to reduce delays, improve accuracy, and ensure reports arrive before the deadline." Notice that once the first "to" is established, it carries through the remaining items — you don't need to repeat "to" before each verb, as long as all verbs are in the same base form. This is grammatically clean, fully parallel, and preserves the original meaning. Answer A mixes forms: "to reduce" (infinitive), "improving" (gerund), and "reports that arrive" (noun clause) — three different structures crammed into one list. Answer B has the same mixing problem in a different arrangement: "reducing" (gerund), "to improve" (infinitive), and "ensuring" (gerund) — inconsistent from the start. Answer C uses yet another scramble: "the reduction of delays" (noun phrase), "improving accuracy" (gerund), and "to ensure" (infinitive) — again, three different forms. A useful strategy: when checking a list for parallelism, mentally strip each item down to its core grammatical form and line them up side by side. If they don't match, the list isn't parallel. On grammar exams, mixed lists are almost always the trap.

Question 6

A recruiter begins a sentence with "The role calls for someone with..." and wants to list judgment, discretion, and explanatory ability as equally important qualifications.

Which completion makes all three qualifications parallel complements of the preposition "with"?

  1. sound judgment, handles confidential data discreetly, and is able to explain complex procedures.
  2. sound judgment, discretion when handling confidential data, and can explain complex procedures clearly.
  3. sound judgment, discretion in handling confidential data, and the ability to explain complex procedures. (correct answer)
  4. judging situations soundly, handles confidential data discreetly, and an ability to explain complex procedures.
Explanation: When a sentence lists multiple items after a single preposition like "with," every item must be the same grammatical form — this is the rule of parallel structure. Think of it like a checklist: each item needs to be the same type of "thing" so the preposition can govern all of them equally. In this sentence, "with" needs three noun phrases to follow it. The cleanest test is to mentally plug each item in alone: "someone with  ." Whatever form works for one must work for all three. Option C passes this test perfectly: "someone with sound judgment" ✓, "someone with discretion in handling confidential data" ✓, and "someone with the ability to explain complex procedures" ✓. All three are noun phrases, making them structurally identical complements of "with." Option A fails because the second and third items switch to verb phrases — "handles confidential data discreetly" and "is able to explain" are clauses, not nouns. You can't say "someone with handles confidential data." Option B mixes correctly — the first two items work as noun phrases — but then breaks the pattern with "can explain complex procedures clearly," another verb clause. It creates a 2-out-of-3 parallel, which still counts as faulty parallelism. Option D opens with a gerund phrase ("judging situations soundly"), then shifts to a verb clause ("handles"), then a noun phrase ("an ability") — three different forms, making it the most broken of all. A reliable strategy: whenever you see a list, strip away the descriptive details and look at the skeleton. If all items aren't the same part of speech, the sentence isn't parallel.

Question 7

A job description must state that a supervisor supports the team through four methods: assigning shifts, reviewing performance, resolving conflicts, and enforcing safety rules.

Which sentence places all four methods in a parallel series governed by "by"?

  1. The supervisor supports the team by assigning shifts, reviewing performance, resolving conflicts, and enforcing safety rules. (correct answer)
  2. The supervisor supports the team by assigning shifts, reviews performance, resolving conflicts, and enforces safety rules.
  3. The supervisor supports the team by the assignment of shifts, reviewing performance, resolving conflicts, and to enforce safety rules.
  4. The supervisor supports the team by assigning shifts, performance reviews, resolving conflicts, and safety rules are enforced.
Explanation: When a sentence lists multiple actions governed by a single preposition like "by," every item in that list must follow the same grammatical form — this is called parallel structure. Think of it as a promise: once you establish a pattern, every element must honor it. In this question, the preposition "by" kicks off a series of four methods. Because "by" signals how something is done, each method should appear as a gerund (an -ing verb acting as a noun): assigning, reviewing, resolving, enforcing. Answer A delivers exactly that — four consistent gerunds flowing cleanly after "by." That's your correct answer. B breaks the pattern midway. It starts with gerunds (assigning, resolving) but switches to conjugated verbs (reviews, enforces), as if the sentence suddenly forgot what structure it was building. The reader loses the thread. C mixes three different forms: a noun phrase (the assignment of shifts), gerunds (reviewing, resolving), and an infinitive (to enforce). Even though gerunds dominate, the outliers destroy the parallel chain. D is the most fractured. It mixes a gerund (assigning), a noun (performance reviews), another gerund (resolving), and an independent clause (safety rules are enforced) — four completely different grammatical structures crammed into one list. Study tip: When you spot a list in a grammar question, immediately identify what form the first item uses, then check every other item against it. If one item breaks the mold, the sentence fails parallelism — that's your trap answer on nearly every structure question.

Question 8

Draft duty statement: "The dispatcher is expected to determine whether a call is urgent, selecting the appropriate crew, and decide which route is safest."

Which revision clearly places all three decisions under the phrase "is expected to"?

  1. The dispatcher is expected to determining whether a call is urgent, selecting the appropriate crew, and deciding which route is safest.
  2. The dispatcher is expected to determine whether a call is urgent, the selection of an appropriate crew, and deciding which route is safest.
  3. The dispatcher is expected to determine whether a call is urgent, select the appropriate crew, and decide which route is safest. (correct answer)
  4. The dispatcher is expected to determine whether a call is urgent, selecting the appropriate crew, and the safest route is decided.
Explanation: When a sentence uses a helping verb phrase like "is expected to," everything that follows must be grammatically parallel — meaning each item in the list should match the same form. Here, "is expected to" sets up an infinitive structure, so every action in the list needs a bare infinitive verb (the base form without "to" repeated): determine, select, decide. Choice C does exactly this. "Is expected to determine… select… and decide" gives you three parallel bare infinitives, all governed by that single "is expected to." The dispatcher's three responsibilities read cleanly as one unified list, which is what the question asks for. The other choices each break this parallel structure in different ways. Choice A switches all three verbs to the -ing (gerund/participial) form — "determining," "selecting," "deciding" — which makes them incompatible with "is expected to," since you can't say "is expected to determining." Choice B mixes forms awkwardly: the first item is an infinitive ("determine"), the second is a noun phrase ("the selection of"), and the third is a gerund ("deciding"). None of these three match each other. Choice D starts with a proper infinitive ("determine"), then slips into a participial phrase ("selecting"), and finally shifts to an entirely different clause structure ("the safest route is decided"), completely abandoning the original subject and the parallel framework. A quick strategy: whenever you spot a list after a verb phrase like "is expected to," "able to," or "wants to," mentally test each item by plugging it directly after that phrase alone. If even one item sounds wrong in isolation, the list is broken and the answer is wrong.

Question 9

The hiring manager wants all three qualifications to have equal status under the modal verb "can."

Which sentence most clearly achieves that purpose through parallel structure?

  1. The manager seeks applicants who can prioritize competing requests, communicating delays tactfully, and remaining calm during service interruptions.
  2. The manager seeks applicants who can prioritize competing requests, communicate delays tactfully, and remain calm during service interruptions. (correct answer)
  3. The manager seeks applicants who can prioritize competing requests, to communicate delays tactfully, and remain calm during service interruptions.
  4. The manager seeks applicants capable of prioritizing competing requests, communicate delays tactfully, and remaining calm during service interruptions.
Explanation: When a sentence uses a modal verb like can, every item that follows it must share the same grammatical form — this is the rule of parallel structure. Think of the modal verb as a single hook: everything hanging from it must have the same shape. In this case, "can" governs three qualifications, so each must be a bare infinitive (the base form of the verb, without to). Answer B does this perfectly: prioritize, communicate, and remain are all bare infinitives. The reader mentally supplies "can" before each one — can prioritize, can communicate, can remain — giving all three equal grammatical weight, exactly as the prompt demands. Answer A breaks parallelism immediately after the first item. While prioritize is a bare infinitive, communicating and remaining are present participles (-ing forms), which don't pair naturally with "can" in this structure. The three qualifications no longer feel like equal, coordinated actions. Answer C mixes forms even more visibly: prioritize (bare infinitive), to communicate (full infinitive with to), and remain (bare infinitive again). Using to with just one item disrupts the pattern and creates an uneven, awkward list. Answer D starts with a completely different construction — capable of prioritizing — which shifts away from the modal verb "can" altogether, then oddly drops into a bare infinitive (communicate) and a participle (remaining). None of the three items share a consistent form. Strategy tip: When you spot a list following a helping verb like can, will, or must, check that every item is a bare infinitive. If any item adds -ing or to, that's your signal that parallelism has broken down.

Question 10

A hiring manager begins a qualification statement with the words "The successful candidate must be able to..."

Which completion uses parallel structure to describe the candidate's three required abilities?

  1. analyzing regional sales data, explaining unexpected changes, and recommending appropriate responses.
  2. analyze regional sales data, explaining unexpected changes, and recommend appropriate responses.
  3. analyze regional sales data, explain unexpected changes, and recommend appropriate responses. (correct answer)
  4. analyze regional sales data, to explain unexpected changes, and recommending appropriate responses.
Explanation: Whenever you see a list of items following a linking verb or modal verb like "must be able to," your first instinct should be to check for parallel structure — every item in the list must belong to the same grammatical form. Here, the stem "The successful candidate must be able to..." sets up an infinitive construction. After "to," you need base-form (infinitive) verbs: analyze, explain, recommend. All three items must follow this same pattern to create a grammatically balanced, parallel list. Choice C does exactly this: "analyze regional sales data, explain unexpected changes, and recommend appropriate responses." Each element is a clean base-form verb phrase, and the "to" from the stem carries through all three items equally. Choice A fails because all three verbs are in gerund (-ing) form: analyzing, explaining, recommending. While internally consistent, gerunds don't fit the infinitive structure established by "must be able to." Choice B mixes forms — analyze (base) and recommend (base) are correct, but explaining (-ing form) breaks the pattern mid-list, which is the most common parallelism trap you'll encounter. Choice D is similarly inconsistent, mixing a base verb (analyze), an infinitive phrase (to explain), and a gerund (recommending) — three different forms crammed into one list. A reliable strategy: before evaluating a list, identify the anchor form set by the sentence stem, then verify every list item matches it. If you can substitute each item into the stem individually and have it sound grammatically correct, your list is parallel.