Which level involves actions like shutting off valves in response to a hazardous incident?

The correct answer is associated with Level 2 because this level of response typically includes actions that directly mitigate a hazardous situation, such as shutting off valves, controlling leaks, and other basic containment measures. Responders at this level are trained to take immediate actions to minimize the impact of hazardous materials while still working within the confines of safety protocols.

Level 2 responders are generally equipped to handle emergency situations that require more than just observation and reporting but do not involve the full-scale operation of advanced hazardous materials incident management that would characterize higher levels. They possess knowledge and training in standard operating procedures for dealing with spills and releases and have the skills necessary to implement initial control measures effectively.

Understanding this level's role helps clarify the responsibilities and capabilities expected from those trained to respond to hazardous situations.