In the following sentence, which word is an adverb used to modify an adjective? it was quite late for a telephone call. a. telephone b. for c. quite d. late

Among your options, only the word quite is an adverb, so the correct answer is C. quite.
Telephone is a noun, for is a preposition, and late is an adjective. The adverb quite is used to modify the adjective late, in order to make it more emphasized. So it wasn't only late for a telephone call, but it was quite late, or very late. 

Number 2 the key is a bleak reminder

The answer is b i guess