Question

which class of fire extinguishers are water - based extinguishers?
a. class c
b. class b
c. class a
d. class d

Explanation:

Fire extinguisher classes: Class A is for ordinary combustibles (wood, paper, etc.). Water - based extinguishers are effective for Class A fires as water can cool and extinguish such fires. Class B is for flammable liquids, Class C for energized electrical fires, and Class D for combustible metals, where water is not suitable. So water - based extinguishers are Class A.

Answer:

c. Class A