The correct answer is Western Plateau. This is the Area in the West of Australia that is distinguished by a significant amount of deserts and is popularly known as the Outback.
let's look at the other answers:
A.Central Lowlands-this is an area east of the Outback
C.The Great Dividing Range-This is a Mountain Range in the east of Australia
D.The great Australian Bight -this is a bay in the south of Australia