What should you do if a fire is too large to control with an extinguisher?

When faced with a fire that is too large to control with an extinguisher, the most appropriate action is to evacuate immediately and call emergency services. This response prioritizes safety above all else. When a fire surpasses the capabilities of extinguishing equipment, attempting to fight it can lead to serious injury or worsen the situation.

Evacuating ensures that individuals are safe from potential harm while professional firefighters are called to manage the incident. Emergency services are equipped with the appropriate tools and training necessary to handle large fires effectively, something that an average individual may not possess.

The other choices suggest potential actions that can endanger life or exacerbate the situation. Using multiple extinguishers may not be effective against a large fire and could distract from exiting the premises. Waiting for the fire to diminish before calling for help can delay the response and increase risk, and attempting to extinguish a large fire with water could be inappropriate depending on the material involved; certain fires, like oil or electrical fires, can become explosive when doused with water. Thus, the best course of action is to evacuate and seek professional assistance.