Answer:
The fragment that is made up of a complete subject is:
D. the loudest musical instruments
Step-by-step explanation:
A complete sentence can be split up into two main parts: the subject and the predicate. The subject is what the sentence is talking about, and the predicate is what is being said about the subject. Usually, the predicate contains the verb. In this case, options a, b and c describe a subject and they all contain a verb (blares, blasted, applauded). Option D does not contain a verb and something can be said about it. Therefore, option D is a fragment that is made up of a complete subject.