The beginning of language and the ability to pretend signal the beginning of what piaget calls the stage .
A. preoperational
B. secondary
C. formal operational
D. concrete operational

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.

the psychologist would claim that the research results were significant.

b and d are your answers i just answered this question