What is the definition of "combustible"?

Combustible materials are defined as those that can catch fire and burn, but they do so with less intensity and at a higher temperature compared to flammable materials. This means that while combustibles can ignite, they do not do so as readily or at lower temperatures as flammable substances do.

Understanding the distinction between combustible and flammable materials is essential in fire safety and prevention measures, particularly in assessing fire hazards in various environments. Combustibles include items like wood, cloth, and paper, which require more energy or a sustained heat source to ignite.

The other options do not accurately capture the definition. For instance, defining combustibles as materials that can catch fire easily misrepresents the key concept that they burn less readily than flammable materials. Similarly, characterizing them as materials that burn at a much higher temperature or merely release energy when exposed to heat does not encompass their specific behavior in terms of ignition and combustion.