Which mountain was named after Major Stephen Long?

The mountain named after Major Stephen Long is Long's Peak. Major Stephen Long was an early American explorer and military officer who led an expedition in the 1820s to the western areas of the United States. His expedition played a significant role in the mapping and understanding of the Rocky Mountains. Long's Peak, located in Rocky Mountain National Park in Colorado, commemorates his contributions to the exploration of the region.

The other mountains listed are named for different historical figures or geographical features. Pikes Peak, for instance, is named after Zebulon Pike, another explorer. Mount Elbert is named in honor of Samuel Elbert, a territorial governor of Colorado. Mount Hood is named after a British Admiral, Lord Samuel Hood. Each of these names reflects a different aspect of American history and exploration, further distinguishing Long's Peak as the correct choice associated with Major Stephen Long.