Class B fires primarily involve which of the following materials?

Class B fires are primarily associated with flammable liquids and gases. This category includes materials like paints, solvents, gasoline, and oils, which can ignite and sustain a fire when exposed to an ignition source. These substances are typically characterized by their ability to vaporize and form flammable mixtures in air, making them particularly hazardous.

In contrast, other classes of fires involve different materials; for instance, Class A fires involve ordinary combustibles such as wood and paper, while Class C fires pertain to electrical equipment. Understanding these classifications is crucial for determining the appropriate extinguishing agents and strategies to safely manage fires involving various materials.