Question

start of the atomic age
forming up at the end of the world war ii, us generals estimated that a full - scale invasion of the main islands of japan. japan, however, remained bitterly resolved to fight to the very end. preliminary estimates had the us should be prepared to lose up to half of its invasion force as casualties, or worse.
in the summer of 1945, president harry truman made the pivotal decision to drop the first atomic bomb, named \little boy,\ on the city of hiroshima. this monumental choice marked the beginning of the atomic age. the decision was not taken lightly, but was nonetheless expected to minimize casualties, forcing japan to surrender without the need for a full invasion.
truman considered alternative targets and methods, such as dropping the bomb on an isolated area to minimize casualties. however, with the recommendations of military advisors, truman ultimately chose hiroshima, leading to some 90,000 to 146,000 casualties and setting the stage for a new era with the end of the war.
why did truman initially consider dropping the atomic bomb on an isolated area in japan?
to test environmental effects
to host a private demonstration
to minimize casualties

Explanation:

The text states Truman considered dropping the bomb on an isolated area to minimize casualties.

Answer:

to minimize casualties