Answer:
1. i don't know what it is that you had to read but i would say that the theme of being an outsider connects with a large portion of teens today because that's exactly how they feel, like an outsider, like someone who will never or can never fit in with everyone else.
2. it most likely wouldn't have had the thoughts and feelings that you would receive if written in 1 person.
3. you would probably want to use a diary or theirs or something of that sort or maybe a timeline perhaps.
4. to help advance the plot because it would be kind of flat and plain without them.
5. https://www.cliffsnotes.com/literature/o/the-outsiders/summary-and-analysis/chapter-2
good luck :)
i hope this helps
**cliffsnotes is a safe website, i'm extremely sure of it**
have a nice day !!