I'm gonna go and say it's parenchyma but I'm not 100% sure
The set point is the normal, or target, value for something.
The right option is; b. anticipatory socialization.
Playing house as a child is a form of anticipatory socialization.
Anticipatory socialization is the process in which an individual changes his behaviors or learn new norms and values in preparation for a change in his role in the future. Playing house which is children’s game is a form of anticipatory socialization because when children play the game, they take the roles of a nuclear family such as children, parents, and newborns. Due to children’s experience with the game, they are prepared for adulthood.