Question

is the word in bold an adjective or an adverb? the biology student examined the feathers closely.

Explanation:

Adverbs modify verbs, adjectives, or other adverbs. In the sentence "The biology student examined the feathers closely", "closely" modifies the verb "examined", describing how the action was done. Adjectives modify nouns or pronouns. Since "closely" is modifying a verb, it is an adverb.

Answer:

adverb