Which type of fire involves combustible metals such as sodium, potassium, or magnesium?

The correct answer is associated with Class D fires, which specifically involve combustible metals such as sodium, potassium, or magnesium. These types of fires are unique because they require special handling and extinguishing methods, as they can react violently with water and may burn at very high temperatures.

Class D materials are often used in various industrial applications, and the combustion of these metals poses distinct hazards compared to traditional combustible materials. Extinguishing agents for Class D fires are typically dry powder agents designed to smother the flames or cool the burning metal, as water or foam would exacerbate the situation.

This understanding is critical for effective fire suppression and safety protocols in environments where such metals are present. Recognizing the specific class of fire enables responders to choose the appropriate firefighting method and equipment, preventing further complications or accidents.