What ocean is on the East Coast of the United States?

The Atlantic Ocean is the correct answer because it is the ocean that borders the East Coast of the United States. This vast body of water extends from the Arctic in the north down to the Southern Ocean in the south, creating a boundary for several northeastern states, including Maine, New York, and Florida. The Atlantic does not only influence the climate and weather of the East Coast but also plays a significant role in trade, transportation, and tourism for the region.

The other options represent different bodies of water that do not touch the East Coast of the United States. The Pacific Ocean lies on the West Coast, the Indian Ocean is located primarily south and east of Africa and does not interact with the U.S., and the Arctic Ocean is situated to the north, far from the contiguous United States. This makes the Atlantic Ocean the only correct choice when discussing the oceans that border the East Coast.