Upon arrival at a motor vehicle crash, the emt should: select one:
a. turn off the ambulance and set the emergency brake.
b. park at least 300 feet away from the accident scene.
c. turn off the emergency flashing lights and headlights.
d. leave only the essential warning lights activated.

Leave only the essential warning lights activated.

Explanation:

Emergency medical technician (EMT) is used for the health care providers in case of the emergency medical services. They respond quickly and provide medical facilities at the emergency situation.

During the accident, EMT can be called for the medical services. They can provide first aid, medicine to the injured individuals. The EMT leave only the important warning light at the accident spot so that other people may get alert about the situation.

Thus, the correct answer is option (D).

the answer is:

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i believe the answer would be 'd'.

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