Baby Asha Is Sitting on the Floor When Her Older

Multiple Choice

Baby Asha is sitting on the floor when her older brother sits down next to her. He takes her favorite stuffed rabbit out of her hands, holds it up, and then puts it behind his back. Within just a few seconds, Asha begins to cry. Her brother hands her back the rabbit, which stops the crying, but he doesn't understand why she didn't just look behind his back for the toy. What would be the reason for this?

A) Asha is in Piaget's formal operations stage of cognitive development and has not yet overcome centration.
B) Asha is in Piaget's concrete operations stage of cognitive development and has not yet overcome conservation.
C) Asha is in Piaget's preoperational stage of cognitive development and has not yet overcome egocentrism.
D) Asha is in Piaget's sensorimotor stage of cognitive development and has not yet mastered object permanence.