1. Public policy refers to the activities and decisions of government that influence citizens' lives. It involves policy choices by officials, implementation of programs, and impacts on citizens.
2. There are three levels of public policy - choices by officials, programs that put choices into action, and effects on citizens. Government uses various tools or instruments of public policy, including laws, services, money, taxes, and persuasion.
3. The choice of policy instruments is influenced by their probable effectiveness, political acceptability, experiences of policymakers, and traditions. The instruments can confer rights, distribute resources, and allocate burdens in society.