Scaffolding: This concept was introduced by Lev Vygotsky (with Jerome Bruner also playing a major role in its development). Scaffolding refers to the temporary support provided by adults or peers when a child is unable to perform a task independently.
Piaget's Concepts (Options B, C, D):
Schema: The mental structure or framework in which information and knowledge are organized in the mind.
Assimilation: The process of incorporating new information into an existing schema.
Accommodation: The process of modifying or adjusting an existing schema in response to new experiences or information.