Answer:
B.) While we were waiting for the fireworks to begin, the mosquitoes began to bite.
Explanation:
The original sentence reads-
"While waiting for the fireworks to begin, the mosquitoes began to bite."
It suggests that while the narrator and the others are waiting for the fireworks to begin, the mosquitoes began biting them. While the basic idea of the original sentence is found in almost all of the four options given, the correct interpretation or rewritten sentence is B.) While we were waiting for the fireworks to begin, the mosquitoes began to bite. The use of the semicolon in option (A) is wrong, option (C) suggest that it is the mosquitoes who are waiting for the firework, and lastly in option (D) the use of "we" is wrong. There is no indication of the narrator and the others doing the firework themselves in the original sentence.
