Which term can serve as both the subject and object of a verb?

The term "pronoun" is correct because it can function as both the subject and the object in a sentence. For example, in the sentence "She runs fast," "she" is a pronoun serving as the subject of the verb "runs." In another example, "I see her," the pronoun "her" serves as the object of the verb "see." This versatility of pronouns is what distinguishes them from other parts of speech, such as nouns, which typically serve as subjects but may not function as objects without additional context or modification.

In contrast, nouns can also serve as both subjects and objects but do not possess the flexibility of being replaced by a pronoun in every situation. Modifiers, such as adjectives and adverbs, are used to describe or limit nouns and verbs, but they do not function as subjects or objects themselves. Adverbs specifically modify verbs and provide more information about the action but cannot act as a subject or object in a sentence. This understanding highlights the distinct role pronouns play in sentence structure.