If a Ball That a Five-Month-Old Infant Is Playing with Rolls

Multiple Choice

If a ball that a five-month-old infant is playing with rolls under a chair (and out of sight) ,the infant will not look for it.Piaget believed that this occurs because the infant

A) does not understand the concept of roll.
B) has a short attention span.
C) has not developed conservation.
D) has not developed object permanence.