Vito, Age 5, and His Uncle Are Playing with Cookie

Multiple Choice

Vito, age 5, and his uncle are playing with cookie dough. They make two round balls of the same size. Vito flattens one ball of cookie dough into a pancake shape on the baking sheet and says, "Look, now this one has more dough." In this context, Vito does not yet understand

A) assimilation.
B) egocentrism.
C) conservation.
D) object permanence.