Which of the following is one of the types of grandparent relationships mentioned in your text?

According to Jean Piaget, __________ is the balance between internal structures and information that children encounter in their everyday worlds

A) imitation B) adaptation C) cognition D) equilibrium

Supporters of Social Darwinism and eugenics sometimes suggest that __________ is not a biological principle but a moral imperative interpreted to mean that weak creatures should not survive

Fill in the blank(s) with correct word