The rat's home cage is strongly associated with food, water, warmth, and safety. as a result, the opportunity to enter the home cage can likely function as a(n) reinforcer.

The right answer is a positive reinforcer.

Positive reinforcement is that in which, following a behavior, a reward or pleasant consequence is obtained. This reinforcement can be from a physical object, to a situation or even to the obtaining of a pleasant emotion. In this case, the rat obtains food, water, heat and safety as a positive reinforcement, for this reason, he wishes to enter the house.

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