Which of the following represents a positive nonverbal behavior?

Leaning towards another person during a conversation indicates engagement and interest in the interaction. This behavior conveys attentiveness and a willingness to connect, suggesting that the individual is comfortable and open in the interaction. Positive nonverbal behaviors like this help to foster a supportive environment, facilitating communication and building rapport between individuals. In contrast, actions such as crossing arms, avoiding eye contact, or sitting with a slouched posture typically suggest defensiveness, disinterest, or lack of confidence, which do not promote effective communication. Therefore, leaning towards the other person stands out as the behavior that positively enhances interpersonal dynamics.