Which type of agent is also known as a riot-control agent?

Riot-control agents, commonly used for crowd control, primarily fall under the category of irritants. These substances, such as tear gas (CS gas) or pepper spray (OC), are designed to incapacitate individuals temporarily by causing discomfort and irritation to the eyes, skin, and respiratory system. The purpose of these agents is to disperse crowds and maintain public order without causing long-term harm.

The irritant properties of these agents lead to effects such as tearing, difficulty breathing, and disorientation, which can help authorities manage potentially volatile situations effectively. In contrast, protective agents are intended to safeguard individuals from hazardous environments, explosive agents cause destructive force, and the option of "none" does not pertain to types of agents that would be used in this context at all. Understanding this classification is crucial for recognizing the intended use and appropriate response strategies in situations involving crowd control.