Final answer:
The USS Constitution, known as 'Old Ironsides,' is the oldest commissioned vessel in the U.S. Navy, renowned for its design, history, and the significant role it played during the War of 1812.
Step-by-step explanation:
The oldest U.S. Navy commissioned vessel is b) USS Constitution. Nicknamed "Old Ironsides," it is an American-designed and constructed frigate made from American oak. Distinguished for its historical significance and remarkable construction, the USS Constitution remains a legendary ship within the Navy. During the war of 1812, under the command of Captain Isaac Hull, the Constitution famously evaded a group of British ships for fifty-seven hours, showcasing its impressive speed and maneuverability. Today, it continues to be a symbol of naval pride and American resilience.