What is the correct definition of combustible materials in fire safety?

In the context of fire safety, combustible materials are defined as those that can burn easily when exposed to heat or flames. This includes a wide range of materials such as wood, paper, plastics, and certain fabrics, which have the potential to ignite and contribute to the spread of fire. Understanding this definition is crucial in fire prevention strategies, as it helps firefighters, safety personnel, and the public identify and manage fire hazards effectively.

In contrast, the other options do not accurately describe combustible materials. Non-flammable materials are those that do not easily catch fire, and fire-resistant materials are designed to withstand heat and resist ignition. Additionally, while some combustible materials may produce toxic smoke upon burning, this is not a defining characteristic of all combustible materials. Focusing on the ability to ignite easily provides a clear and actionable framework for fire safety measures.