The sentence below describes a historical discovery. Which form of the present-tense verb 'to illustrate' correctly completes the sentence to maintain proper subject-verb agreement?
Answer:The collection of vintage maps in the archives 【illustrates】 the evolution of cartography over the centuries.
Answer
illustrates
The correct verb form is 'illustrates' because the subject of the sentence is the singular noun 'collection'. Modifying prepositional phrases like 'of vintage maps' and 'in the archives' do not change the number of the subject. A singular subject requires the singular verb form 'illustrates'.
Step-by-Step Solution
Key Concept
Subject-verb agreement with intervening prepositional phrases