Which statement regarding Class D extinguishing agents is true?

The statement that the specific agent must be matched to the specific fuel is true because Class D fires involve combustible metals such as magnesium, titanium, and sodium, which require specialized extinguishing agents. These agents are designed to react appropriately with the specific metal to effectively smother the fire, prevent re-ignition, and eliminate risks of chemical reactions that could occur if an inappropriate agent is used.

Using the correct agent is crucial because the wrong extinguishing agent can exacerbate the fire, leading to potentially dangerous situations. For example, water, which is effective for many fire classes, can react violently with certain combustible metals, making it essential to use a suitable Class D extinguishing agent for safety and effectiveness. This specificity ensures that fire personnel can effectively extinguish the flames without introducing additional hazards.