Which of the following is a characteristic of Class D fires?

Class D fires specifically involve combustible metals such as magnesium, titanium, and sodium. These types of fires are unique because combustible metals can ignite and burn at extremely high temperatures, and they may react violently with water or other extinguishing agents, making them distinct from fires involving organic materials, flammable liquids, or gases.

Extinguishing Class D fires typically requires specialized agents designed for metal fires, such as dry powder extinguishing agents like sodium chloride or graphite. Understanding that Class D fires deal with combustible metals is crucial for fire safety and firefighting strategies, as the incorrect use of water or inappropriate extinguishing agents can exacerbate the situation.