The traditional symbol for a Class D fire extinguisher is a(n):

The traditional symbol for a Class D fire extinguisher is indeed represented by a yellow star. Class D fires involve combustible metals, such as magnesium, titanium, and potassium, which require specific extinguishing agents that are effective for those materials. The yellow star symbol is used to designate the presence of these extinguishers and help users identify the appropriate equipment for handling metal fires. This visual cue is important for safety, as it allows firefighters and first responders to quickly locate the right extinguisher for the hazardous materials they may encounter, ensuring a prompt and effective response to metal fires.

The other symbols mentioned are used for different classes of fires and are not applicable to Class D materials, which specifically deal with metals and require specialized extinguishing techniques. Understanding these symbols and their meanings helps personnel act swiftly and accurately in emergency situations.