Tris changes factions and has to come out of her comfort circle to find out her identity and who she really is. Tobias must come to find compassion apart from his strict attitude.
The answer c.) it creates a mood of gloom, I hope this helps.
I think that this is a very good opening paragraph. I can clearly tell exactly what your writing piece will be about, and it definitely hooks me in as a reader... GOOD JOB!
