The scene size-up at a motor vehicle crash or other incident:
a. is an ongoing process until the incident is terminated.
b. betermines who is allowed to safely enter the hot zone.
c. is a quick visual assessment of the scene prior to entry.
d. should be performed by the most experienced emt.

C.

Explanation:

The scene size-up at a motor vehicle crash or other incident is a quick visual assessment of the scene prior to entry. Since a scene size-up is the process in which an EMT evaluates various aspects of the accident quickly before entering the scene in order to ensure both the crew and the patient's safety, by not performing an action that may worsen the situation.

the answer is risk management planning