Explanation:

- Credit flow: Refers to the amount of credit available in the economy or the movement of capital, often between banks and businesses or individuals. It does not pertain to the government's budget or deficit.

- Fiscal deficit: This is indeed the correct option. It represents the difference between the government's total expenditure and its total receipts, excluding borrowings. It indicates the shortfall in a government's income compared with its spending.

- Debt burden: This refers to the amount of debt a government owes and its potential impact on its financial stability. It's not concerned with yearly fiscal calculations but rather with overall indebtedness.

- Market equilibrium: This is an economic term that describes a market situation where supply equals demand, and there is no tendency for change. It is not related to government expenditures or receipts.