What was
an argument used in favor of dropping atomic bombs on Japad?
A It would prevent high casualties of civilians in Japanese cities.
B. it would prove to Great Britain that the United States was
superpower
C it would convince Germany is has to surrender
D it would present high casualties that would be caused by an
imcasion of mainland Japan

The initial approved casualties forecast of U.S troops done by the Joint War Plans Committee ranged from 130,000 to 200,000, but latter after the Japanese reinforcement efforts the numbers increased to 1,7 million to 4 million; this led to a change in the strategy since the numbers now represent too great of a loss for the U.S army.

Explanation:

d. migration