Answer:
I would think it is "D" but if you think this explanation fits better with another one, then im sorry . . .
Step-by-step explanation:
President Harry S. Truman, warned by some of his advisers that any attempt to invade Japan would result in horrific American casualties, ordered that the new weapon be used to bring the war to a speedy end. On August 6, 1945, the American bomber Enola Gay dropped a five-ton bomb over the Japanese city of Hiroshima.