I think B or D (; I'm not 100% sure but those are my best guesses
Fitzgerald describes Nick as non-judgmental, that he knows not everyone has had the same advantages he has had in life which helps him befriend and understand people.
Because Nick is the narrator, it is important to set the character up in this way because the reader will be more likely to trust the observations of the other characters that Nick makes. If the reader thinks he is too judgmental, they might not believe his story as fully.
Well, i would like a school that is more willing to teach instead of throwing papers and making us work and hate the enviorment. if they where willing to teach and actually want to teach, it would be great. and maybe it would be easier for people to do the work and actually would like to learn. it would possibly be a healthier mindset as well if this choice was made.
but that is only my belief.
I think its either b or a mostly a though hope this helps!!