The Hallmark of the Fourth Substage of the Sensorimotor Period

Multiple Choice

The hallmark of the fourth substage of the sensorimotor period, coordination of secondary circular reactions, is the emergence of:

A) repetition of chance actions by the body.
B) intentionality or the ability to engage in goal-directed behavior.
C) the end of the A-not-B error.
D) repetition of chance actions with objects.