Which of the following best describes mutual reinforcement?

Mutual reinforcement refers to a situation where two or more individuals exchange reinforcers, creating a reciprocal influence on each other's behavior. This concept highlights the interactive nature of reinforcement, emphasizing that each person's actions can be mutually beneficial. For example, in a social or therapeutic context, when one individual supports another, both can experience positive outcomes and behaviors that reinforce each other. This exchange can enhance learning, cooperation, and relationship building.

In contrast, the concept of unilateral support or a single reinforcement does not account for the back-and-forth nature of mutual reinforcement. Similarly, having one individual receive all the motivation fails to illustrate the reciprocal relationship that is fundamental to mutual reinforcement. Therefore, B captures the essence of mutual reinforcement by recognizing the value of shared exchanges between individuals, demonstrating how their behaviors can influence and strengthen one another.