Ababy looks under the sofa for a ball that has just rolled underneath it. according to jean piaget, the baby's action shows development of

The correct answer is object permanence.

Object Permanence is best described as the understanding that items keep on existing notwithstanding when they can't be (seen, heard, touched, noticed or detected in any capacity). As per this view, it is through touching and dealing with objects that newborn children create object permanence. 

The answer is to spread the world of christ