Which class of fire involves combustible cooking oils and fats?

The classification of fires is essential for determining the appropriate extinguishing method, as different types of fires require different approaches. Fires that involve combustible cooking oils and fats fall under a specific class known as Class K. This class includes materials such as vegetable oils, animal fats, and other cooking products that can ignite and burn at high temperatures.

Class K fire extinguishers are specifically designed to handle these types of fires. They typically contain a wet chemical agent that cools the flames and forms a soap-like film on the surface of the burning oil, effectively smothering the fire while preventing it from reigniting. This is crucial because using the wrong type of extinguisher, such as those used for Class A, B, or C fires, can exacerbate the situation by causing the burning oil to splatter or spread, leading to a larger fire.

In summary, the identification of Class K as the correct answer accurately reflects the unique properties and risks associated with fires fueled by cooking oils and fats, highlighting the importance of using the correct extinguishing agent in firefighting scenarios.