Concept:The capital of a country is its political and administrative center, not necessarily its largest city.
Explanation:Sydney, Melbourne, and Brisbane are major Australian cities, but none is the capital.
Canberra was chosen as the capital after the federation of Australia in 1901.
It is located in the Australian Capital Territory and serves as the seat of government.
The name Canberra comes from an Aboriginal word meaning "meeting place."
Therefore, Canberra is the official capital of Australia.
Answer:B. Canberra