What Is the "All-Hazards" Approach to Emergency Management

What is the "all-hazards" approach to emergency management?

A) Even when threats by individuals or smaller terrorist groups are made, they are still taken very seriously and investigated to evaluate their validity.
B) People are made aware of all the potential hazards to health through outlets such as the media in an effort to promote governmental transparency.
C) It is the idea that the same capacities, response, and recovery plans can be applied to all different types of disasters whether natural or man-made.
D) Once an emergency has taken place, the all-hazards approach is to throw as many agencies and governmental organizations at it, sparing no expense to save lives.