Answer:
c. the main idea of each paragraph
Explanation:
Holden begins talking to his dead brother, Allie.
You didn't italize or mark the phrase, but I see one good candidate:
"The circus animal trainer" is in a way another name given to Mervin, a kind of "renaming" him: this is called an appositive phrase, so if this was the phrase appositive phrase is the answer! (also, I don't see the other phrases here).
Similes comparing the passion to a avalanche and a prairie fire
Answer:
Dear (name of friend),
How are you? I hope you are doing fine. I am writing this letter to apologise about the fact that I spilled water on your project work. I know how much effort you have put into this project, even if you didn't too much or did much, I want to tell you how sorry I am. I hope you will forgive me for what I did and I won't do it again.
Cheers,
(Your name)
I don't know if this is for an assignment or anything, but here's my response. :-)