Which of the following is the technique of changing the level of support over the course of a teaching session, where a more skilled person adjusts the amount of guidance to fit the student's current performance?

Scaffolding is the technique of adjusting support during a session so a more skilled person fits guidance to the learner's current performance.

Cognitive apprenticeship (B) is the broader expert-novice relationship, not the specific tuning of support.

Tutoring (C) is one-to-one instruction, not specifically the graded adjusting of support.

Concept formation (D) is the process of forming categories and ideas, unrelated to support levels.

The term scaffolding was introduced by Wood, Bruner and Ross.

It builds on Vygotsky's zone of proximal development, with support withdrawn as competence grows.