Respuesta :
the answer is b that it should be used if it would shorten the war or save American lives
We have that the idea behind the use was that
it should be used if it would shorten the war or save American lives
Option B
From the question we are told
What did Presidents Roosevelt and Truman both believe about the bomb from the beginning?
The bombs idea
Generally on the wake of the bomb idea the war herd stretch for too long and taken much american live because of the Japans unexpected assault
Therefore
Presidents Roosevelt and Truman both believed that
it should be used if it would shorten the war or save American lives
Option B
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