The following sentence contains a dangling modifier. Choose the best revision to eliminate the dangling modifier.
"Having studied all night, the exam was easy."
The best revision is
Correct: A
The original sentence contains a dangling modifier, as the phrase "Having studied all night" is meant to describe the subject of the sentence, but the subject is actually "the exam", which cannot study. The best revision to eliminate the dangling modifier is choice A, which adds the subject "I" to the sentence, making it clear who had studied all night. This revision maintains the original meaning of the sentence while avoiding the dangling modifier. Choice B is incorrect, as it changes the sentence to a cause-and-effect structure, which is not the same as the original sentence. Choice C is incorrect, as it still contains a dangling modifier. Choice D is incorrect, as it adds a vague pronoun "me" to the sentence, which is not necessary.