Which class of fire involves ordinary combustibles like paper and wood?

The correct answer is the class of fire designated for ordinary combustibles, which includes materials such as paper, wood, cloth, rubber, and many plastics. This class is identified as Class A fires. The method of extinguishing Class A fires typically involves the use of water or other agents that cool the burning material and interrupt the combustion process.

Class A fires are common in residential and commercial settings due to the prevalence of wooden structures and paper products. Fire extinguishers designed for Class A fires often bear a green triangle symbol, indicating their suitability for fighting fires involving ordinary combustible materials. Recognizing the characteristics of different classes of fires is crucial for effective fire prevention and firefighting strategies in various environments.