Respuesta :
"While we were waiting for the fireworks to begin, the mosquitoes began to bite" is the one revision among the following that most effectively corrects the dangling modifier in the sentence. The correct option among all the options that are given in the question is the first option or option "A".
The revision which most effectively corrects the dangling modifier is option 1:
While we were waiting for the fireworks to begin, the mosquitoes began to bite.
There must be added one more subject in the subordinate clause "While...begin", apart from the mosquitoes in the main clause because obviously the mosquitoes would not care about the fireworks, but the additional subject "we", or any other person or name, surely would.