Concept:Fiscal policy deals with government revenue and expenditure to influence the economy.
Explanation:Fiscal policy measures include changes in taxation and government spending.
Taxation forms part of government revenue.
Government expenditure covers public spending on goods, services, and infrastructure.
These tools help regulate inflation, unemployment, and overall economic activity.
Option D is correct because fiscal policy changes both government revenue and expenditure to regulate the economy.
Answer:D. government revenue and expenditure to regulate an economy