A relatively durable change in behaviour or knowledge that is due to experience is defined as

A) mediation.
B) maturation.
C) learning.
D) conditioning.

Learning is the process of acquiring knowledge, skills, attitudes, and values through experience, study, or instruction, resulting in a relatively permanent change in behaviour or potential behaviour. Mediation refers to the process of intervening or mediating between two parties, maturation refers to the natural growth and development of an organism, and conditioning refers to the process of learning associations between stimuli and responses. While conditioning can lead to a relatively durable change in behaviour, it does not involve knowledge acquisition in the same way that learning does. Therefore, the best answer is C.