Why is no one allowed to know who you have voted for?
Explanation:
"In Australia, voting in an election is by secret ballot, so you are free and safe to vote for any candidate. No one is allowed to know whom you have voted for unless you choose to tell them."
Australian Citizenship Test gives you access to many more tests than just the one practice test available on the government website. That official sample test is good for giving you an idea of what to expect on the real test. But it can't help you prepare fully. Nor does reading the Australian Citizenship: Our Bond material alone.