Answer:C
Explanation:an Adjective Clause
Is a dependent clause that functions as an adjective. Key words to look out for adjective clauses are who, whom, whose, that, or which] or a relative adverb [when, where, or why].
To me it looks like it’s A
Answer:
a word that can function by itself as a noun phrase and that refers either to the participants in the discourse
Explanation: