A 53-year-old man suddenly collapses and becomes unresponsive. You witness him collapse and are the first rescuer to arrive at the scene, and you find him lying motionless on the floor.

Several rescuers respond, & you ask them to activate the emergency response & retrieve the AED & emergency equipment. As you check for a pulse & breathing, you notice that the man is gasping for air & making "snorting" sounds. You do not feel a pulse. What is your best next action?
a) Start high-quality CPR, beginning with chest compressions
b) Monitor the victim until additional, more experienced help arrives
c) Provide rescue breathing by delivering 1 breath every 5-6 seconds
d) Find someone to help by retrieving the nearest AED