(D) Post Office Monthly Income Scheme
Post Office Monthly Income Scheme is listed under long-term financial investment options, with a maturity period of 6 years.
The source passage clearly places Post Office Monthly Income Scheme under long-term investment options. Options A, B, and C (Savings Bank Account, Money Market/Liquid Funds, and Bank FDs under one year) are explicitly categorised as short-term options. Examiners expect you to recall this classification directly.