The announcement means that legal subjects publicly disclose binding or compulsory content to the public. The purpose is to let the public know, know, and act in compliance. Which of the following options fits the definition? ['A manufacturer has newly launched a delicious food, which is promoted at the entrances of major supermarkets and allows consumers to taste.', 'A prominent person holds a press conference to announce to the public that his current position will be taken over by another person.', 'A civil society makes its self-cultivation recipes public, so that everyone can also extend their lives.', 'The Ministry of Health announces to the public the rules of conduct that citizens should pay attention to during this severe period.']