試題詳解

9. Tod is upset because his sister got a bigger brownie than he did. Their mother cut Tod's brownie so that he had three pieces of brownie. Tod was happy that he now had more brownie than his sister. This suggests that Tod
(A)has not attained conservation.
(B)is just beginning to have concrete operational thought.
(C) is performing a mature mental operation in his mind.
(D) is still in the sensorimotor stage.