The correct answer is D. Adverb
Explanation:
In grammar, a modifier is a word that modifies or describes others, in the case of nouns and pronouns the type of words that modify them are adjectives and in the case of verbs the modifiers are adverbs. In the English language, many adverbs end in "-ly" such as the adverbs slowly, greedily or furiously but words such as today, here or now are considered as adverbs. Besides this, adverbs answer the question of how? as the adverb carefully; when? as the adverb today; where? as the adverb out; how much? as the adverb absolutely and how often? as the adverb frequently. Therefore, the word that modifies a verb and answers the questions how, when, where and how much is an adverb.
