Final answer:
In 1901, Australian colonies united to form the Commonwealth of Australia, which established a democratic government system with a federal structure while retaining the British monarch as a ceremonial head of state.The correct option is A.
Step-by-step explanation:
In 1901, Australian colonies united to form the Commonwealth of Australia, establishing a system of government in Australia. The correct answer is a) The Commonwealth of Australia, government.
When Australia federated, it adopted a democratic form of governance with a federal structure, although it remained part of the British Empire with the monarch as the ceremonial head of state.
Over the years, there have been discussions about separating from the British Crown, but no such move has been approved, and the system remains largely intact.The correct option is A.