Which of the following is the best example of a primary reinforcer? A. Praise B. Money C. Food D. Attention

C. Food is the best example of a primary reinforcer.

Explanation:

A primary reinforcer are those reinforcers which have biological importance. Primary reinforcement is also known as unconditional reinforcement, this means that they take place without any need of learning. Examples of primary reinforcers are: Food, sleep, water, air, sleep. Animals and human beings are born with a need for primary reinforcers. A good example to illustrate this is the need for milk by an infant.