The narrator used the weapon called grenade. Thus the option(B) is correct.
What is the theme of Ambush?
Ambush is the story written by the Tim O'Brien in which he describes about the Vietnam's war and the author wants people know about this war. He also says that how he killed a Vietnam solider and imaging the scene it still haunts him.
The narrator also describes about the weapons being used by him in the war. He used grenades to defend his village.Thus overall he speaks about the soldier's experiences at the time of the war.
Thus the option (B) is correct.
Learn more about Vietnam here:
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