If a spill is spreading, what should first responders do first?

Answer: B — Implement containment measures and evacuate the area if necessary

When dealing with a spill that is spreading, the primary focus for first responders is to ensure the safety of the public and themselves. Implementing containment measures is crucial to prevent the spill from spreading further and causing additional harm or environmental damage. The urgency of the situation could also necessitate evacuating the area if there is a significant risk to people nearby. Monitoring the situation from a distance can provide valuable information about the spread of the spill; however, it does not actively address the hazard. While waiting for specialized teams may seem prudent, delays in action can exacerbate the situation and increase risk to people and the environment. Lastly, ignoring the spill entirely is not an option, as it can lead to severe consequences, especially in populated or sensitive areas. Therefore, responding promptly with containment measures while keeping safety as the priority is the appropriate course of action.