which statement is true? A) adverbs can modify adjectives, and adjectives can modify adverbs. B) some words that are usually nouns can function as adjectives. C) an adjective is a word that modifies a verb, or another adjective. D) an adverb can only modify a noun or a pronoun.

The correct statement is option B) "some words that are usually nouns can function as adjectives". Sometimes nouns can function as adjectives depending on their placement within the sentence

Option A is incorrect since adjectives cannot modify adverbs.

Option C is also incorrect since an adjective only modifies nouns

Option D is also incorrect since adverbs do not modify nouns. Adverbs modify an adjective, a verb, a clause, and another adverb.