A because the narrator knows some of what is going on but does not know the inner turmoil of every character.
it's harmful to not only individuals, but society as well. it is hard to combat because of how society works. If someone very influential says something ra cist, se xist etc on social media, that can teach many people to think saying things like that is okay. alienating someone from society is incredibly harmful, and it can influence others to do the same.
I think the answer is: A. Personification
I hope this helps!