Question 211Safety & Environmental - 1st Asst/Chief

The correct answer is D) class D. A magnesium fire would be classified as a class D fire, which is a fire involving combustible metals such as magnesium, titanium, or sodium. Class D fires require specialized extinguishing agents and techniques, as water and other common extinguishers can actually worsen these types of fires. The other answer choices are incorrect because class A fires involve ordinary combustible materials, class B fires involve flammable liquids and gases, and class C fires involve energized electrical equipment.