Which One of the Following Statements Is Most Consistent with the Basic

Which one of the following statements is most consistent with the basic premise of the concept formulated by Vygotsky called the "Zone of Proximal Development?"

A) Children can always accomplish more with the help of an adult or other more experienced person than they can accomplish independently.
B) Children's closeness with their mother facilitates their ability to learn.
C) As a child matures, tasks that initially could only be performed with help can be performed independently.
D) Children frequently left alone to fend for themselves are more likely to develop behavior problems.