Detailed Explanation:

Operation Prahar is a special enforcement drive launched by Bihar Police to strictly enforce the state's liquor prohibition law.

• Key Features: Violators found drinking or under influence are immediately arrested and produced before Executive Magistrates; bulk liquor recovery sites can be demolished.
• Context: Bihar implemented total prohibition in 2016, and Operation Prahar ensures zero-tolerance enforcement against alcohol consumption and smuggling.
• Therefore, Operation Prahar is directly related to liquor ban enforcement, making Option 3 the correct answer.