Which of the following is the adverb form of "rare"?

Which of the following is the adverb form of "rare"?

• A. rarely
• B. rarer
• C. rarest
• D. rarefy

Answer: (A)

The adverb form of "rare" is "rarely." This form modifies verbs, adjectives, or other adverbs, indicating the frequency of an action. In contrast, "rarer" and "rarest" are comparative and superlative forms of the adjective "rare," used to compare the degree of rarity among different subjects. "Rarefy," on the other hand, is a verb that means to make something rare or less dense and does not serve as an adverb. Therefore, "rarely" is the correct choice, as it suitably conveys the idea of something occurring infrequently, aligning with the function of an adverb.

The adverb form of "rare" is "rarely." This form modifies verbs, adjectives, or other adverbs, indicating the frequency of an action. In contrast, "rarer" and "rarest" are comparative and superlative forms of the adjective "rare," used to compare the degree of rarity among different subjects. "Rarefy," on the other hand, is a verb that means to make something rare or less dense and does not serve as an adverb. Therefore, "rarely" is the correct choice, as it suitably conveys the idea of something occurring infrequently, aligning with the function of an adverb.