Final answer:
Class D is the class of fire that involves combustible metals like magnesium and titanium. option d is correct
Step-by-step explanation:
Option d is correct The class of fire that involves combustible metals, such as magnesium and titanium, is Class D. Class D fires involve flammable metals that can react with oxygen and produce intense heat and flames. These fires can be extremely dangerous and require specialized fire extinguishing agents, such as dry powder or sand, to suppress them.
The class of fire that involves combustible metals, such as magnesium and titanium, is Class D. This type of fire cannot be extinguished by water, foam, or normal fire extinguishers since these substances can exacerbate the fire when dealing with combustible metals. Instead, special dry powder agents designed for metal fires are used to smother the flames and absorb the heat.