Which of the following parts of speech expresses emotion?

Verbs are action words that describe what a subject is doing, such as "run," "jump," or "think." While some verbs can indicate emotional states (like "love" or "hate"), they do not inherently express emotions in the same direct manner as interjections do. Thus, verbs serve primarily to convey actions or states rather than pure emotional expression.

Adverbs modify verbs, adjectives, or other adverbs, providing additional information about how an action is performed, such as "quickly" or "happily." Although adverbs can describe the manner of actions that may relate to feelings (e.g., "sadly"), they do not directly express emotions themselves, making them distinct from interjections.

Pronouns are used to replace nouns and indicate specific people or things, such as "he," "she," or "they." While pronouns can refer to subjects experiencing emotions, they do not express those emotions directly. Their role is primarily functional in terms of sentence structure rather than emotional expression.