Final answer:
The argument opposing the use of the atomic bomb points to the massive casualties, especially among civilians, caused by the bombings of Hiroshima and Nagasaki, and questions the necessity of using such a weapon.
Step-by-step explanation:
The argument that opposes the use of the atomic bomb is: C) The atomic bomb led to the death of around 150,000 or more Japanese, including many civilians.
This argument highlights the moral concerns and significant loss of civilian life resulting from the bombings of Hiroshima and Nagasaki.
Opponents contended that there were other ways to end the war without inflicting such massive casualties and questioned whether the bombings were necessary given Japan's weakening position due to a significant naval blockade and regular fire-bombing of its cities.
Despite these concerns, President Truman and many military advisors saw the atomic bomb as a means to quickly end the war and save Allied troops' lives. However, the use of the atomic bomb remains a highly controversial and morally debated action in history.