Which word in the sentence is a plural pronoun? They read many stories about Milo and him. A. many B. stories C. him D. They

A pronoun can substitute a noun or a noun phrase. Among the options above only C. him and D. They are pronouns: stories is a noun and many could be a pronoun if is was standing alone, but here it is a part of a noun phrase.

C. him is singular, so the right answer is D. They