Which class of fire is depicted in the pictograph system by a fire in a frying pan?

The correct choice is indicated by class K, which represents fires that involve cooking oils and fats, commonly associated with kitchen environments. A fire in a frying pan typically involves substances like vegetable oils or animal fats, which are categorized under class K fires.

Class K fires are specific to situations where high-temperature cooking oils ignite, and they require special extinguishing agents, such as wet chemical agents, to effectively suppress the flames and prevent re-ignition. Understanding this classification helps firefighters use the right method and equipment to combat these types of fires safely and efficiently. Knowledge of class K fires is particularly important for first responders as these fires can behave unpredictably and pose different hazards compared to other types of fires.