Which extinguishing agent is described as water-based and used for ordinary combustibles?

• A. ABC
• B. K
• C. Water Based
• D. ABCD

Answer: (C)

Water-based extinguishing agents are designed for ordinary combustibles like wood, paper, and cloth. They work mainly by cooling the fuel, absorbing heat so the fire can’t continue burning and re-ignite. For fires involving these everyday fuels, a water-based option is the best fit because its primary action is cooling the fuel itself. The dry chemical option is a multi-purpose powder that interrupts chemical reactions and can handle several fire types, but it isn’t water-based. An extinguisher intended for cooking fats and oils targets flammable liquids and isn’t water-based either. The remaining choice isn’t a standard extinguisher type and serves as a distractor. Water-based is the correct pick.