​According to Vygotsky,what Is "The Zone of Proximal Development

Multiple Choice

​According to Vygotsky,what is "the zone of proximal development"?

A) The difference between what the child can do and what the child hopes to do.
B) ​The difference between the words a child uses and the words the child understands.
C) ​The difference between what a child knows and what the parents know.
D) ​The difference between what a child does alone and what the child does with help.