Australian Citizenship Practice Exam 2025 - Free Citizenship Practice Questions and Study Guide

The Indian Ocean is the correct answer because it is the body of water that lies to the west of Australia's mainland. Australia is surrounded by several oceans, but specifically, the Indian Ocean borders its western coastline.

The Pacific Ocean is located to the east of Australia, while the Atlantic Ocean is situated much farther away to the east of Australia and does not directly border the country at all. Lastly, the Arctic Ocean is located far to the north and is not relevant to Australia's geographical location in the southern hemisphere. This understanding of Australia's geography is fundamental when learning about the country's position relative to surrounding bodies of water.