<span>The correct answer is C. adverb clause. First of all, you have to know that this is a dependent clause, meaning that it cannot stand on its own (the way independent clauses can), but rather it has to belong to another sentence. So, A is incorrect. Dependent clauses can be noun clauses, adverb clauses, and adjective clauses. Noun clauses function as nouns, adjective clauses as adjectives, and adverb clauses as adverbs. Adverb clauses answer the questions such as When?, Where, Why?, which is the case here, which is why C is the correct answer.</span>
