What method does NOT contribute to fire extinguishment?

The addition of more fuel does not contribute to fire extinguishment because it directly works against the principles of fire suppression. Fire requires three essential components to sustain itself: fuel, heat, and oxygen, often referred to as the fire triangle. By introducing more fuel, you are providing more of one of the necessary elements for combustion, which can intensify and perpetuate the fire.

In contrast, removing oxygen is an effective fire suppression method because it deprives the fire of one of the elements it needs to continue burning. Similarly, cooling the fire involves lowering the temperature, which can help bring it below its ignition point, thereby aiding in extinguishment. Interrupting the chemical reaction that occurs during combustion also effectively stops the fire from burning. Each of these methods works by eliminating one of the critical components necessary for a fire to thrive, unlike the addition of fuel, which only exacerbates the situation.