A relationship in which a less experienced learner acquires knowledge and skills under the guidance of an expert is known as:

Cognitive apprenticeship is a relationship where a novice gains knowledge and skill under an expert's guidance.

Observable learning (B) is not the named relationship here.

Cognitive load (C) is the mental effort a task demands.

Cognitive science (D) is the study of the mind, not a learning relationship.

It makes expert thinking visible through modelling, coaching and scaffolding.

Collins, Brown and Newman formulated the cognitive apprenticeship model.