Final answer:
Public policy involves government decisions and actions to address societal problems and promote citizens' welfare. Key concepts include the types of goods in a society and the domains or areas of public policy.
Step-by-step explanation:
Public policy refers to the decisions and actions taken by the government to address societal problems and promote the welfare of its citizens. It involves a range of processes, including problem identification, agenda setting, policy implementation, and evaluation. Key concepts associated with the study of public policy include the different types of goods in a society, such as public goods and private goods, as well as the domains or areas in which public policy operates, such as education, healthcare, and transportation.