How much of Australia's landmass is covered by the Western Plateau?

The Western Plateau covers about one-third of Australia's total landmass. This vast region is characterized by its relatively flat terrain, consisting mostly of ancient, weathered rocks. The plateau stretches across many states, including parts of Western Australia, South Australia, and the Northern Territory. Understanding the geographical layout of Australia highlights the significance of the Western Plateau in terms of natural resources, agriculture, and the unique ecosystems that thrive within its boundaries.

Though the other options present different fractions, they do not accurately reflect the actual coverage of the Western Plateau in relation to Australia's total land area. The choice indicating one-third provides the best representation of the plateau's size and importance in Australia's geography.