Okinawa has been a significant tricky place for the United States Armed Forces since the end of World War II. The island hosts around 26,000 US military group, about half of the total supplement of the United States Forces Japan, scattered among 32 stations and 48 preparation places. US authorities in Okinawa played significant roles in the Korean War, Vietnam War, War in Afghanistan and Iraq War. The appearance of the US army in Okinawa has created state dispute both on the island and elsewhere in Japan.
The correct answer among all the other choice is C. Okinawa. This battle convinced Allied leaders that an invasion of the Japanese mainland might be too costly in human lives. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.