Juan (A Six-Year Old) Is Not Able to Solve a Conservation

Multiple Choice

Juan (a six-year old) is not able to solve a conservation problem on his own. But when his teacher explains the solution to him, he understands and can solve these problems. According to Vygotsky, the teacher was able to move Juan forward due to

A) Juan's age
B) the abstract explanation offered by the teacher
C) the zone of proximal development
D) an information search strategy
E) an increase in working memory