When a child understands that things and events continue to exist even though one can't see or hear them, we say that the child understands
a. intuitive thought.
b. mathematical theory.
c. object permanence.
d. conservation.
Object permanence is a sign of development of infant's social and mental capacities.
Example of object permanence : when infant is already aware that he/she has a dad. Even though the dad went to work and the infants can not see them , the infants still acknowledge his existance
