As Juan and His Father, Carlos, Put Together a Puzzle

Multiple Choice

As Juan and his father, Carlos, put together a puzzle for the first time, Carlos begins by showing Juan how to locate the outside pieces of the puzzle first. Once Juan starts to get the idea, Carlos gradually withdrawals his support, allowing Juan to take more responsibility. Carlos is demonstrating Vygotsky's concept of "______."

A) sensorimotor support
B) scaffolding
C) optimal reinforcement
D) overimitation