Really simple and straight to the point:)
Hello (mr/mrs__),
I wanted to thank you for arranging the school trip. I really appreciate it and thought I should thank you. Have a good day!
(ur name)
Answer:
#1: It's Something You're Interested In
A paper is always easier to write if you're interested in the topic, and you'll be more motivated to do in-depth research and write a paper that really covers the entire subject. Even if a certain research paper topic is getting a lot of buzz right now or other people seem interested in writing about it, don't feel tempted to make it your topic unless you genuinely have some sort of interest in it as well.