Pat is normally very restless and fidgety;Shelly is usually quiet and easygoing.The two children most clearly differ in

A) maturation.
B) egocentrism.
C) temperament.
D) object permanence.

The difference in behavior described between the two children suggests a difference in temperament, or their characteristic emotional reactivity and intensity. Maturation refers to changes in physical and mental abilities as one grows older, egocentrism is a cognitive limitation in which a child struggles to understand others' perspectives, and object permanence is the understanding that objects continue to exist even when they cannot be seen.