Concept:Fiscal policy is the government's use of taxation and public spending to manage the economy.
Explanation:The phrase "tax and expenditure policy" refers to how the government collects revenue through taxes and spends money on public services and projects.
By adjusting taxes and government spending, the government can influence aggregate demand, employment, inflation, and economic growth.
For instance, lower taxes and higher spending are used to stimulate the economy, while higher taxes and reduced spending help control inflation.
This approach is exactly what is meant by fiscal policy.
Monetary policy, by contrast, deals with interest rates and the supply of money, not tax and expenditure measures.
Physical measures and deregulation do not focus on tax-and-spend tools.
Answer:D. fiscal policy