What ocean is on the west coast of the United States?

The Pacific Ocean is the large body of water situated on the west coast of the United States. It spans significantly from North America to Asia and is known for its vastness and importance in global trade, fishing, and cultural exchanges. The west coast states of the United States, including California, Oregon, and Washington, have coastlines that directly border the Pacific Ocean. This ocean plays a crucial role in the climate and ecology of the western U.S., influencing weather patterns and supporting diverse marine life.

The other options refer to different oceans that do not border the U.S. west coast: the Indian Ocean lies to the south of Asia and Africa, the Arctic Ocean is situated around the North Pole, and the Atlantic Ocean is located along the east coast of the United States. Therefore, the correct answer emphasizes the geographic relationship between the Pacific Ocean and the western United States.