A, B, C, D, and K are classifications for _____________.FiresFlammable liquidsCombustible materialHazardous materials

A, B, C, D, and K are classifications for Fires. These classifications are used to categorize the different types of fires based on the type of fuel involved.

1. Class A fires involve ordinary combustible materials such as paper, wood, cloth, and some types of plastic.

2. Class B fires involve flammable or combustible liquids such as gasoline, kerosene, grease, and oil.

3. Class C fires involve electrical equipment, such as appliances, wiring, circuit breakers, and outlets.

4. Class D fires involve combustible metals, such as magnesium, titanium, potassium, and sodium.

5. Class K fires involve cooking oils, trans-fats, or fats in cooking appliances and are typically found in restaurant and cafeteria kitchens.

So, the correct answer is Fires.