What is name of the writer of the poem keep a poem in your pocket

C) Because Keith was born in Japan

Explanation:

An adverb clause  is a dependent clause that functions as an adverb. That is, the entire clause modifies a verb, an adjective, or another adverb. As with all clauses, it contains a subject and predicate, though the subject as well as the (predicate) verb may sometimes be omitted and implied.