Explanation:

- The two main components of a government budget are the Revenue Budget and the Expenditure Budget.

- Option 1: Expenditure budget – This is a correct answer. It shows the government's planned spending, both on day-to-day expenses (revenue expenditure) and on creating assets (capital expenditure).

- Option 2: Capital budget – This is not one of the two main broad components. It is actually a part of the expenditure budget.

- Option 3: Investment budget – There's no standard component by this name in government budgets.

- Option 4: Income budget – This is not a standard term. The correct term is "Revenue budget," which covers income and receipts.