Vygotsky's Concept of The Zone of Proximal Development Referred to

Vygotsky's concept of the zone of proximal development referred to

A) the range of tasks that a child could accomplish with the assistance of a teacher or parent.
B) the range of physical abilities in an individual child.
C) the cultural context in which the child shows the weakest performance.
D) the range of tasks that the child can do without any assistance.