Which sentence contains a dangling modifier?

Jumping on the trampoline, my brother broke his leg.

Jumping on the trampoline, the applause began.

Jumping on the trampoline, I felt my hair flying around my face.

Jumping on the trampoline, Sarah suddenly felt sick.

The sentence which contains a dangling modifier is:

c. Jumping on the trampoline, the applause began.

Dangling means hanging or expressing incomplete thought which requires further details to expand the idea conveyed. The third sentence causes confusion to the readers because the two clauses do not justify each other.