Final answer:
An A:B:C fire extinguisher can be used on electrical fires, burning liquids, and burning cloth, as it is designed for Class A, Class B, and Class C fires, which correspond to these materials.
Step-by-step explanation:
An A:B:C fire extinguisher is a multipurpose device designed to tackle several types of fires. The letters refer to the fire classes:
- Class A fires involve ordinary combustibles such as wood, cloth, and paper.
- Class B fires involve flammable or combustible liquids like gasoline, kerosene, grease, and oil.
- Class C fires involve electrical equipment like appliances, wiring, circuit breakers, and outlets.
Therefore, the correct answer to the question is 4) all of the above. An A:B:C fire extinguisher can be used on electrical fires, burning liquids, and burning cloth, making it appropriate for a variety of emergency situations where these materials are involved.