Respuesta :
I agree with you it is C. Airplane -Airplanes were really only doing large amounts of attacking enemy troops on the ground in 1918, and they honestly weren't that good at it.
Answer:
The answer is bayonet
Explanation:
its bayonet because they couldn't always get close enough to stab everyone. An airplane can do way more destruction that a knife. A bayonet is a knife. And the question is asking what weapon caused the FEWEST causalities in WWI
Causalities meaning death!!!