Which class of fire involves burning paper or wood?

The correct classification for a fire involving burning paper or wood is Class A. This class of fire consists of ordinary combustible materials, which include common substances such as paper, wood, cloth, and some types of plastics. These materials are characterized by their ability to ignite easily and sustain combustion. Class A fires are typically extinguished using water or other firefighting agents that can cool and smother the burning material.

Understanding fire classification is crucial for safety and effective firefighting methods. Recognizing the nature of the material involved in a fire helps responders choose the appropriate extinguishing agent, as using the wrong type can be ineffective or even exacerbate the situation. For instance, using water on a Class B fire, which involves flammable liquids, would be dangerous. Hence, knowing that Class A relates specifically to solid combustible materials like paper and wood is essential for appropriate fire safety training and response.