Which class of fire includes liquids?

The correct answer is Class B, which specifically pertains to flammable liquids and gases. This classification is critical for understanding fire prevention, control, and firefighting methods. Class B fires can involve substances such as gasoline, oil, paints, solvents, and propane. These materials have unique combustion properties that require specific extiguishing agents, such as foam, carbon dioxide, or dry chemical fire extinguishers.

Class A fires, in contrast, are associated with ordinary combustible materials like wood, paper, and cloth, while Class C fires involve electrical equipment, and Class D fires pertain to combustible metals. Understanding these classifications is essential for ensuring appropriate safety measures and responses in various fire scenarios.