What type of fire can be extinguished using water?

The correct answer is that fires classified as Class "A" can be extinguished using water. Class "A" fires typically involve ordinary combustible materials such as wood, paper, cloth, and some plastics. Water is effective in extinguishing these types of fires because it cools the burning material and reduces the temperature below the ignition point, thus stopping the combustion process.

Water is not suitable for Class "B" fires, which involve flammable liquids such as gasoline and oil, as it can spread the flames instead of extinguishing them. Similarly, Class "C" fires involve energized electrical equipment, where using water can pose a serious risk of electric shock and may damage the equipment. It's crucial to identify the type of fire correctly in order to choose the appropriate method for extinguishment, making the understanding of fire classes essential for safety and effective fire response.