Answer:
D. Australia's capital is Canberra
Explanation: Australia's Geographical theme is described by all other options except the option(d). Australia has a varies climate which range from arid to tropical,this is because of its location. Australia's population is mostly English speaking,this is because of its location. Australia is very rich in natural resources such as Nickel,Iron-ore,natural gas, Diamond, Aluminum,oil shale,zinc, Uranium etc this is made possible by its location.
Australia is also an island surrounded by the Indian and Pacific oceans,its terrain is mostly low plateau with deserts.