Janis decided she wanted her 6-year-old son donnie to drink diet soda instead of regular soda that contained sugar. she filled the soda bottle that normally contained soda with sugar with diet soda. donnie never noticed the difference. his perception was influenced by:

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.