Subordinate clauses are defined as the clauses that usually begin with a subordinating conjunction and depend on the principal clause to accomplish its meaning. Thus, these clauses primarily function to compliment the meaning of the original meaning of the sentence by adding information to it. As per the question, the type of clause that could be identified in the given sentence would be 'subordinate clause'('As the fireworks roared and exploded overhead') as it begins with the subordinating conjunction 'as' and is dependent on the main clause to accomplish its meaning. However, it is followed by the main clause('Brandon....show') but on the very first note, one can observe the dependent clause. Thus, option C is the correct answer
