Diego is 3 years old. His mother pours him and his elder sister orange juice. Becaus in a taller glass er does not have two glasses of the same size, she pours his sister the juice in a taller grass than his. Though both glasses have the same amount of juice. Diego starts to cry because think his sister has more juice. In the context of cognitive development m any scenario illustrates the concept of
A) egocentrism.
B) centration.
C) animism.
D) imitation