Question

While President Truman ultimately made the decision to drop the atomic bombs, the Manhattan Project and the development of those bombs was a decision made by
President Franklin Roosevelt
General Dwight D. Eisenhower
Prime Minister Winston Churchill
scientist Albert Einstein

The initial effects of the atomic bomb dropped on Hiroshima and Nagasaki were

there was heavy damage only within a mile of the bomb's impact

the entire city was razed to the ground and nothing left standing

there was a cloud of fallout that spread far and wide beyond Japan

there was destruction