Which technique do most types of fire extinguishers operate using?

The technique that most types of fire extinguishers operate using is known as the "PASS" method, which stands for Pull, Aim, Squeeze, and Sweep. This method is essential because it provides a simple and effective way for individuals to remember how to use a fire extinguisher correctly in an emergency situation.

By pulling the pin, the user ensures that the extinguisher is activated. Aiming at the base of the fire is crucial because that is where the fuel source is located; only by targeting the base can the fire be effectively extinguished. Squeezing the handle releases the extinguishing agent, and sweeping back and forth helps to cover the area of the fire for maximum effect, ensuring that it is fully put out.

Understanding and employing the PASS technique enhances safety during fire emergencies and increases the likelihood of successful fire suppression. This is why it is commonly emphasized in fire safety training and is the correct choice for this question.