The answer is public policy microeconomics in which use to determine how well the government performs its role in the market economy and the trade-offs with those policies. In addition, microeconomics is the study of the selections made by households, firms and government and how these selections affect the market for goods and services and microeconomics aids to comprehend how markets work and to forecast how numerous events affect the prices and amounts of products in the market, make personal and managerial decisions and to assess public policies