Answer:
A good explanation of why dieting makes you fat is because of the stress it causes the body. Stress hormones act on fat cells to increase abdominal fat. Also, weight anxiety and dieting predict later become binge eating and gaining weight
I believe it would be B, because there are two subjects that the speaker is referring to at the beginning of the sentence; the caterpillar and the leaf. When they use the word "it" in the second half of the sentence it is unclear whether they mean to say if "it" is the leaf or the caterpillar which they are carrying to their brother.
Paragraph 1, since it says "I can't believe this storm" and "we're stuck on the couch!" Which indicates that setting that the whole story is in, not including where they actually go.