Redeemable debts are financial obligations that must be repaid by a specific future date, typically with interest. They are not perpetual and require settlement at a predetermined time. Therefore, the correct answer is (a).
For a hypothetical economy, assume the government increased infrastructural investment by ₹10,000 crore. 80% of additional income is consumed in the economy. Estimate the increase in income and the corresponding increase in consumption expenditure in the economy.