What does the term "fire propagation" refer to?

The term "fire propagation" specifically refers to the spread of fire from one area to another. This process involves the ways in which flames and heat transfer from an ignited source to surrounding materials, leading to the enhancement and continuation of the fire. Understanding fire propagation is crucial in fire investigations as it helps determine the progression of a fire, the materials involved, and the overall dynamics at play during the incident. Factors such as fuel types, arrangement, and environmental conditions heavily influence how effectively a fire may spread, making this concept foundational for evaluating fire scenarios and their outcomes.

While other options mention aspects related to fire dynamics and behavior, they do not focus on the specific concept of how fire moves and spreads, which is encapsulated in the concept of fire propagation.