Answer: Zone of proximal development (ZPD)
Explanation:
Zone of proximal development (ZPD) is known to be the gap which exists between what an individual can perform alone without assistance from anyone and with assistance from an intelligent and well educated person which can be a teacher, parent, adult and so on. It is the zone in which a learner can learn and master new skills through assistance and guidance. Thus, for learning to be effective a little assistance is needed by a child in the zone of proximal development because the child will learn how to perform and do task on his own.