Which term is a medium machine gun?

• A. Grenadier
• B. Medium machine gun
• C. Forward Observer
• D. Landmine

Answer: (B)

In infantry weapon terminology, the label used for a weapon designed for sustained fire at a medium caliber is the term itself. So the phrase that names this category—the one that designates a firearm as a medium machine gun—is exactly “medium machine gun.” It’s a classification, not a role or a device, which is why it fits the prompt best.

The other options refer to things that aren’t firearm categories: grenadier is a soldier who specializes in grenades, a forward observer is a person who coordinates fire missions, and a landmine is a defensive device. Those don’t describe a weapon type, so they don’t fit the question as the correct term for a medium machine gun.