I don't understand how to answer questions like these:

Question

Which sentence is written best?

A	While laughing, her throat got a chicken bone stuck in it
B	While laughing, the chicken bone stuck in her throat.
C	The chicken bone stuck in her throat while laughing.
D	The chicken bone stuck in her throat while she was laughing.

Answer 1

The difference among the sentences comes from the placement of "while laughing." It needs to be clear that SHE was the one laughing, not the chicken bone or her throat. The first sentence has her throat laughing. The second has the bone laughing. The third again has her throat. The last sentence is the only one where it is clear that she is the one laughing, so it is the correct answer.