Answer:
#2 - Sonar technology is the best way to solve most monster mysteries.?
Explanation:
I think #2 because it kind of shows the main idea of the text and how Sonar technology solves most of the mysteries.
The subject the explosion of clown crews and the predicate/verb allow are not in agreement because the subject is in the singular form, and the predicate in the plural. This is the correct way to rewrite the sentence:
The explosion of clown crews allows <span>unique styles of dance to evolve, such as krumping. OR
The explosions </span><span>of clown crews allow unique styles of dance to evolve, such as krumping.</span>
