Which principle is best supported by the rule that no one may know whom a voter has voted for unless the voter chooses to tell them?

Which principle is best supported by the rule that no one may know whom a voter has voted for unless the voter chooses to tell them?

• AVoting choices must remain private unless the voter voluntarily shares themCorrect
• BVoters must publicly announce their choices after voting
• CGovernment officials may inspect every person’s vote
• DPolitical parties have a right to know each voter’s choice

The fact supports the concept of privacy in voting: a voter’s choice is not to be known by others unless the voter chooses to disclose it.