Answer:
D. He commanded the American naval fleet in the Pacific.
Step-by-step explanation:
Chester Nimitz, fleet admiral of the U.S. Navy, played a major role in the naval history of World War II as commander in chief, U.S. Pacific Fleet (CinCPac), for U.S. naval forces and commander in chief, Pacific Ocean Areas (CinCPOA), for U.S. and Allied air, land, and sea forces.
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