Class "B" fires involve what category of combustible materials?

Class "B" fires involve flammable and combustible liquids, which include a variety of substances such as gasoline, alcohol, oil-based paints, and lacquers. These materials are characterized by their ability to ignite easily and burn rapidly, often producing large flames and hazardous conditions. Firefighting strategies for Class "B" fires typically focus on smothering the flames or cooling the burning liquid to prevent re-ignition, as water can often be ineffective or even dangerous to use in these situations.

Understanding the specifics of what constitutes a Class "B" fire is crucial for effective fire prevention and response. Options that refer to Class "A" materials like cloth, wood, and paper; Class "D" materials such as certain metals; or cooking oils which pertain more to Class "K" fires, highlight the importance of correctly categorizing fire types, as different classes have different combustibility characteristics and response strategies.