What is the definition of combustion?

The definition of combustion encompasses a chemical process where a material reacts with oxygen to produce heat and light. The correct choice highlights the concept of self-sustained combustion, which is a critical element in understanding how fires propagate once they have started.

In practical firefighting terms, this means that when a material reaches its ignition temperature and combines with oxygen, it can continue to burn without needing an external heat source. This phenomenon is significant because it informs firefighters about how to approach extinguishing a fire and the behaviors of various materials involved in combustion.

Understanding this principle is crucial for effective fire control strategies and ensuring firefighter safety. Recognizing the conditions under which materials can sustain combustion independently also aids in assessing the fire's intensity and the necessary actions required to mitigate it.