Which of the following is least likely to contribute to a Class A fire?

A Class A fire involves ordinary combustible materials such as wood, paper, and textiles. These materials can readily ignite and sustain combustion due to their organic nature. Wood and paper are both combustible materials that easily catch fire, while textiles also fit this description as they are often made from natural fibers that burn.

Gasoline, however, is classified as a flammable liquid and is associated with Class B fires, which involve flammable liquids and gases. Class A fires are characterized by solid combustibles, while Class B fires primarily involve the ignition of liquids or gases that can produce vapors capable of combustion.

Thus, gasoline is least likely to contribute to a Class A fire because it does not fall under the typical materials considered in this category of fire. The nature of gasoline as a flammable liquid aligns it with a different classification of fire hazards, highlighting its distinct characteristics compared to the other options presented.