I think you are missing a dash thing in between the words "mid" and "May".
(Answer:
2) Jumping on the trampoline, the applause began.
Explanation:
For example:
After reading the book, the movie made more sense.
^ Who read the book? This modifier is left dangling.
After reading the book, I thought the movie made sense.
^ 'I' Is catching the modifier here.
Therefore, sentence one (Of the example) includes the dangling modifier.
In the case of the question, who was jumping on the trampoline?
I believe the answer is A as he pretends to be a greedy prince. He then confesses that his words were only to test Macduff's commitment to him and scotland.
He argues that they could have done better on their own.