Answer: Zone of proximal development
Explanation: The zone of proximal development could be explained as the difference between the period when a child begins to develop signs of independence, that is ability to perform task without adult tutelage or guidance and the period of child dependence, that is when a child can only perform task only with the help or assistance of an adult.
As the child starts to demonstrate signs of independence or capability, that us showing signs of having acquired enough and ripe to do things on his/her own, adult assistance is being withdrawn so the child could have more liberty. This shows adults' direct involvement in the children's zone of proximal development.