Answer:
The acronym is PASS - Pull the pin, Aim at the base of the fire, Squeeze the trigger, and Sweep from side to side.
Step-by-step explanation:
So, to extinguish a fire using a fire extinguisher, you first need to pull the pin located near the handle. Next, aim the nozzle at the base of the fire, not the flames. Then, squeeze the trigger to start releasing the extinguishing agent. Finally, sweep the nozzle from side to side, covering the base of the fire until it's extinguished.