Answer:
object permanence
Step-by-step explanation:
Jean Piaget was a famous psychologist who has given the theory of cognitive development in which he has mentioned four distinct stages including the sensorimotor, preoperational, concrete operational, and formal operational stage.
Object permanence: According to Piaget's theory, the term object permanence occurs during the first stage of cognitive development i.e, the sensorimotor stage. It develops around four to seven months of a child's life.
Object permanence states that a particular object still exists even when it can't be perceived i.e, touched, sensed, seen, heard, smelled, etc.
In the question above, Chanel has not yet developed object permanence.