A scene size-up helps you determine all of the following EXCEPT: A. If EMS has been called B. What happened C. If dangerous hazards are present D. If any bystanders are available to help

(D) If any bystanders are available to help

Explanation:

The purpose of scene size-up is to expeditiously ensure that there is a safe scene on which to provide care, and that the proper resources are summoned to the scene according to the number of patients and their specific care needs. Scene size-up is the initial evaluation of the scene by an EMT. The first action or primary concern of an EMT when arriving at the scene is their own safety.

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