As Shawn and his father, Carlos, put together a puzzle for the first time, Carlos begins by showing Shawn how to locate the outside pieces of the puzzle first. Once Shawn starts to get the idea, Carlos gradually withdraws his support, allowing Shawn to take more responsibility. Carlos is demonstrating Vygotsky's concept of: a) sensorimotor support. b) overimitation. c) optimal reinforcement. d) scaffolding

Carlos is demonstrating Vygotsky's concept of d) scaffolding.

Explanation:

Scaffolding is based on Vygotsky's Zone of Proximal Development, also known as ZPD. Scaffolding consists of a supporter helping a learner only to the extent the learner needs. As the learner gains knowledge and becomes more skillful, the supporter gradually withdraws his assistance, allowing the learner to do things on his own. The learner eventually becomes fully responsible for the outcome of what he does. That is exactly what Carlos is doing when teaching his son how to put together a puzzle.

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