Portable extinguishers are classified according to their?

• A. Intended use
• B. Type of extinguishing agent
• C. Size
• D. Brand

Answer: (A)

Portable extinguishers are classified by their intended use—the types of fires they’re designed to fight. Labels show which fire classes (like A for ordinary combustibles, B for flammable liquids, C for energized electrical equipment, etc.) an extinguisher can handle, guiding you to choose the right tool for the hazard present. This focus on what fires it’s meant to suppress is why this option is the best answer.

The other aspects describe properties or marketing rather than suitability for a fire. The extinguishing agent type matters for effectiveness, but classification centers on the fire class it’s intended to combat. Size affects how long the extinguisher lasts, not which fires it should be used on. Brand doesn’t determine safety or applicability.