Sylvia Is Playing with a Small Stuffed Dog When It

Multiple Choice

Sylvia is playing with a small stuffed dog when it falls and rolls under her crib.She does not seem particularly distressed, and she does not search for the lost toy.According to Piaget, what accounts for Sylvia's behaviour in response to this event?

A) She has mastered object permanence.
B) She has not yet mastered conservation.
C) She has not yet mastered object permanence.
D) She has mastered the concept of conservation.