30. The stage of cognitive development , according to Piaget , in which a child displays ‘object permanance’ is true

30. The stage of cognitive development , according to Piaget , in which a child displays ‘ object permanence’ is the

( 1 ) sensorimotor stage

( 2 ) preoperational stage

( 3 ) concrete operational stage evoval son

( 4 ) formal operational stage

Ans- (1) sensorimotor stage

Reason:- The sensorimotor stage lasts from a child’s birth to two years of his/her age. The behaviour of a child during this stage lakes organised thought process.