Which factors influence fire behavior?

B is the correct choice because fire behavior is significantly influenced by several key factors: fuel type, weather conditions, terrain, and building construction.

Fuel type determines how quickly a fire can ignite and how intensely it burns. Different materials (such as wood, plastics, or chemicals) have varying ignition points, burning rates, and heat release, all of which affect how a fire spreads. Weather conditions, including temperature, wind speed, and humidity, can alter how a fire behaves. For example, high winds can push flames and embers in new directions, while humidity can affect the moisture content of fuels, influencing their combustibility.

Terrain plays a crucial role, particularly in wildland fire scenarios. Slopes can create upslope winds that encourage fire spread, while natural barriers (such as rivers or roads) can stop or slow down fires. Lastly, building construction influences fire behavior within structures; materials used, fire-resistant features, and the design of a building can all affect how a fire originates and spreads, including potential for flashover.

In contrast, the size of the fire crew and type of equipment primarily relate to firefighting capability rather than fire behavior itself. While these aspects are critical in firefighting strategy, they do not influence how a fire behaves