Answer:
object permanence
Step-by-step explanation:
Object permanence: In psychology, the term object permanence was introduced by Jean Piaget in his theory of cognitive development.
According to Jean Piaget, object permanence is defined as a child's understanding towards a particular object or thing that they still exist even if he or she is not able to perceive that thing or object, for example, touched, seen, or heard. A child requires the capability to develop a mental representation or schema of a particular thing or object.
In the question above, the given statement signifies the importance of object permanence.