PLZ HELP ASAP

Read the sentence.

__________ were invented during World War I, but their use often backfired when the wind shifted direction.

Which correctly completes the sentence?

A. Flamethrowers
B. Artillery shells
C. Chemical weapons
D. Grenades

Respuesta :

Answer:

The answer is C.

Explanation:

Chemical weapons.

c, chemical weapons. these were invented in 1915 when the Germans attacked the French.