Which substance is considered a flammable liquid?

Gasoline is considered a flammable liquid because it has a low flash point, which means it can easily ignite at relatively low temperatures. This property demonstrates the substance's ability to evaporate and form vapors that can ignite in the presence of an open flame or hot surface, thus posing significant fire risks.

Water, being a non-flammable liquid, does not support combustion and is often used to extinguish fires. Soap, primarily composed of fats or oils in aqueous solution, does not have the same flammability characteristics as gasoline. Ice, a solid form of water, also does not burn. Therefore, gasoline stands out among the options as the substance that meets the criteria for being classified as a flammable liquid.