🔍 Key Concepts

• Fire classes (A, B, C, D) as used on US-flag vessels and in basic firefighting • How different extinguishing agents (water, foam, dry chemical) work on different fuel types • Why water cooling/quenching is very effective on some materials but dangerous on others

💭 Think About

• Match each answer choice to the correct fire class you learned in basic firefighting, then ask yourself which one is labeled Type A • Think about what burns on a ship that you can safely cool with large amounts of water without causing electrical shock or spreading burning liquid • Compare: which option talks about solid materials that leave glowing embers versus liquids, metals, or energized equipment?

✅ Before You Answer

• Verify which fire class is associated with ordinary combustibles like wood, paper, cloth, and some plastics • Make sure you are not mixing up the class that involves flammable liquids and greases with the one that needs heavy water cooling • Confirm that the option you pick describes a situation where water or water-based solutions are the primary extinguishing method