In an emergency, what is the initial step to take regarding hazardous materials?

Answer: B — Ensure your safety and the safety of others, then call for emergency assistance

The correct choice emphasizes the importance of prioritizing safety in an emergency involving hazardous materials. The first step is to ensure your safety and the safety of others in the vicinity. This involves assessing the situation to determine if it is safe to stay or if evacuation is required. It is crucial to recognize potential dangers such as toxic fumes, spills, or fire hazards before taking further action. After ensuring your own safety and that of others, the next logical step is to call for emergency assistance. This allows trained professionals to handle the hazardous materials appropriately, as they possess the necessary equipment and expertise to manage the situation effectively. It's essential to convey crucial information to emergency responders, including the type of hazardous material involved and the extent of the situation. Immediate evacuation may seem like a logical first response, but without assessing the risk, it may lead people into a more dangerous situation. Attempting to contain a spill without proper training and safety measures could expose individuals to further risks. Notifying the media is not appropriate at the onset of an emergency, as the priority should be managing safety rather than disseminating information. Thus, ensuring safety and seeking emergency assistance is the correct initial response in such scenarios.