Answer:
The Mariah Carey CD to which we listened was good. (C)
Explanation:
This is the right sentence with its blank filled with “to which we listened”. This is because we do not hear something rather we listen to something. Listening to is always used in the English language because it forms the right sentence with the correct grammatical use. It gives meaning to the sentence. The readers understand in the better manner with the use of this sentence.