Diego Garcia serves as a military base for which country in the Indian Ocean?

Diego Garcia, a small atoll in the Indian Ocean, is a strategic military base operated by the United States. Part of the British Indian Ocean Territory, it hosts a significant U.S. naval and airbase, playing a critical role in regional security and military operations. The base’s location supports rapid deployment in the Middle East and Asia. Options A (United Kingdom, which administers the territory but does not operate the base), C (France), and D (India) are incorrect, as the U.S. maintains control of the military facilities.