Kohlberg emphasized perspective taking and as critical aspects of the social stimulation that challenges children to change their moral reasoning.

The answer to this question is peer interaction.

Lawrence Kohlberg is a psychologist who developed the judgment about social stimulation. Peer interaction is the way of interacting of children and adolescents. In peer interaction, children and adolescents learn vocabulary, languages, and other traits from their peers. 

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.