The statement that best analyzes why President Truman decided to abandon the plan to launch an amphibious invasion of Japan in 1945 is:
Truman realized that the invasion would cost too much money and American lives.
This response reflects the strategic considerations that influenced Truman's decision, particularly the projected high casualties for an invasion of Japan, which led to a preference for alternative means, such as the use of atomic bombs, to bring about Japan's surrender.