Which of the following behaviors is NOT characteristic of horizontal violence?

Supportive feedback and encouragement are behaviors that foster a positive work environment, build teamwork, and enhance collaboration among colleagues. Horizontal violence, which often manifests as bullying or aggression between peers, typically includes actions that undermine or harm others. Examples of such behaviors include defensive postures and rolling eyes, which indicate disapproval or contempt; undermining colleagues' confidence, which can inhibit their performance and self-esteem; and gossiping about peers, which creates distrust and an unhealthy workplace culture. Therefore, supportive feedback and encouragement stand in stark contrast to the negative behaviors associated with horizontal violence, making this the correct choice.