Which three factors influence the configuration of solid fuel in a fire?

The configuration of solid fuel in a fire is critically influenced by surface to mass ratio, orientation of the fuel, and continuity of the fuel.

The surface to mass ratio is vital because it determines how quickly a fuel will ignite and burn. A larger surface area allows for a greater reaction with oxygen, thereby allowing for more efficient combustion. For example, finely shredded wood will ignite and burn faster than a large log due to its increased surface area.

The orientation of the fuel refers to how fuel is arranged, which can affect airflow and burning efficiency. A fuel pile that allows for proper ventilation will promote better combustion conditions compared to densely packed materials that restrict oxygen flow, thus affecting the fire's intensity and spread.

Continuity of the fuel relates to how interconnected or uninterrupted the fuel is. Continuous fuel allows fire to spread more easily, whereas gaps or breaks in the fuel can slow down or inhibit fire progression. The arrangement of fuel sources can dictate the manner in which flames propagate and can influence the overall fire behavior.

The other options contain factors that, while relevant to fires or burning processes, do not specifically focus on the configuration of solid fuel or its direct influence on fire behavior in the same way. Hence, the combination of surface to mass ratio, orientation,