I will have to go with D because one pound is 3500 so if you reduce 3500 you can lose a pound
https://sciencing.com/chemistry-important-study-anatomy-physiology-5147085.html
Vegetables
Fruits
Grains
Meats/poultry
Dairy
The answer can be both increase in self-esteem and increase in aggression. All of the research generally points to increase of self esteem because during puberty self awareness is very prominant which increases self esteem. I would be safe and go with self esteem. I hope this helps.