Answer: The section: How to stay safe when a volcano threatens; Prepare Now.
Explanation: The webpage ready.gov provides the necessary information that civilians need to know in case of a disaster or emergency. In the area of volcanoes, there is a section named: "How to stay safe when a volcano threatens; Prepare Now.", which presents instructions to follow when a volcano emergency is on course, citing directly from it; "Ask local emergency management for evacuation and shelter plans, and potential means of protection from ash.".
