PSAT Writing and Language Question 133: Answer and Explanation

Question: 133

• A. NO CHANGE
• B. matches
• C. has matched
• D. will be matching

Correct Answer: B

Explanation:

B

Difficulty: Easy

Category: Agreement: Verbs

Getting to the Answer: Read the sentence and notice that the verb in question is in a clause with intervening prepositional phrases that come between the subject and the verb. Check to see what the subject is and whether the verb agrees with the subject. The verb "match" is in a plural form, but the subject is "DNA," not one of the other nouns in the prepositional phrases. "DNA" is singular. Choice (B) is the correct answer because it is the singular form of the verb "to match."