Fiscal deficit means the difference of
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Public expenditure and debts from sources other than RBI
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Public Capital Expenditure and surplus of Revenue Account
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Govt. Expenditure and Revenue receipts
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Public Expenditure and Tax and non-tax revenue receipts
Fiscal deficit is the gap between the government's total expenditure and its total revenue receipts (excluding money from borrowing). Option D captures this by stating it's the difference between public expenditure and tax/non-tax revenue receipts. The other options are incorrect: Option A mentions debts from sources other than RBI (irrelevant), Option B refers to capital expenditure vs revenue account surplus (not the definition), and Option C is too vague - it doesn't specify that debt creation is excluded from receipts.