When Teaching Something New to a Child, Vygotsky Pointed Out

When teaching something new to a child, Vygotsky pointed out that:

A) Competencies come about as a result of interactions between novices and more skilled members of a society acting as tutors or mentors.
B) One can measure a child's capability by that child's performance of a skill the child has been accomplished already.
C) Children's development is enhanced when they work independently.
D) The young child's process of learning is passive and completely dependent on the environment.