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

The Pacific Ocean is the body of water that lies on the West Coast of the United States, making it the correct choice. This vast ocean is the largest and deepest of the world's oceans, stretching from the Arctic Ocean in the north to the Southern Ocean in the south and serving as a major boundary for many countries, including the U.S. The coastal states that border it include California, Oregon, and Washington, which are known for their beautiful beaches, climate, and significant marine activity.

The Atlantic Ocean, located on the East Coast of the United States, is not relevant to the context of the question, as it does not border the western parts of the country. The Indian Ocean is far to the south and east of the U.S., primarily associated with countries like India, Madagascar, and Australia. The Arctic Ocean, while it lies to the north of North America, does not directly border the contiguous United States and is not relevant to the West Coast. Thus, the Pacific Ocean stands out as the accurate answer regarding the ocean that aligns with the West Coast of the United States.