A.) Preventing unnecessary air pollution
I think this says that self esteem is a bigger issue in schools than it used to be. a lot of teens have a low self esteem due to bullying and teasing in school. most of the higher self esteem children are the ones who think they are better than everyone else and they usually end up having a bad attitude towards other people which causes them to have very few friends.
The food is called Chyme.
Stereotype. I believe this is the correct fill in the blank to this!