Which of the following is an example of a non-lethal weapon used by jail officers?

The choice of a taser or pepper spray as an example of a non-lethal weapon is appropriate because these tools are specifically designed to incapacitate or deter individuals without causing permanent harm or fatal injuries. Tasers deliver an electric shock that temporarily disables voluntary muscle control, while pepper spray is an irritant that can incapacitate an individual by causing temporary blindness and respiratory distress. Both are intended to subdue aggressive behavior effectively while minimizing the risk of serious injury or death compared to lethal options.

In contrast, the other choices listed involve lethal or potentially lethal options. The baton, while typically considered a non-lethal weapon, can still cause significant injury when used with excessive force. Firearms and knives represent lethal weapons, meant for scenarios where an officer's life is threatened, and their use is governed by strict policies due to the potential for fatal outcomes. Thus, the choice of a taser or pepper spray distinctly aligns with the concept of non-lethal weapons used in correctional settings for controlling situations safely.