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A reaction to the chemical warfare used during world war I was the use of.
(a)trench warfare
(b)gas mask
(c)zeppelins
(d)infantry attacks​

Sagot :

Answer:

i believe it would be a gas mask.

Explanation:

If it has something due to with chemicals and stuff id assume the men reacted with gas masks to be able to survive the chemicals and yea i hope im right