Correctional Officer Basic Training Test 2025 – 400 Free Practice Questions to Pass the Exam

The classification labeled 'A' pertains to ordinary combustible materials, which include wood, paper, and cloth. The correct extinguishing agent for such combustibles is water or foam. Water is effective because it cools the burning material and removes the heat, which is one of the three elements of fire (heat, fuel, and oxygen).

Each classification has specific agents suited to extinguish fires effectively. For example, electrical fires (classification C) require non-conductive agents, while class D fires, which involve combustible metals, need special agents tailored for that type of material due to their unique burning properties. Class K fires, related to cooking media (often oils and fats), need specific agents designed to tame those types of flames.

This understanding leads to the conclusion that the pairing of classification 'A' with combustible materials is correct, as it encompasses the appropriate agents used to combat fires resulting from ordinary combustibles.