An effective warning message designed to elicit a quick response from the public includes all of the following components except: a. protective actions b. hazard magnitude c. historical background d. likelihood

C. historical background

Explanation:

According to my research on natural disaster warning procedures, I can say that based on the information provided within the question all of the answers provided except for historical background will elicit a quick response from the public. In order for the public to react quickly to an upcoming dangerous event they need to know how bad the event will be, how likely it is to happen, and what they can do to protect themselves. Historical background will not provide any help to the public.

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answer; inductive techniques;