In which scenario does bullying occur? Lilly is laughed at by a group of older girls.
Another player bumps into Levi while they are playing an intramural basketball game.
Ian is not invited to a classmate’s birthday party.
Reese is “unfriended” by an acquaintance on social media.

lilly

Explanation:

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.