Answer:
The correct option would be D, Certificate of Deposit.
Explanation:
Certificate of deposit are certificates which are given to the investor in exchange of his money. His money is held by the bank or the financial institution for a fixed number of years, after which he can withdraw his amount. During the period in which his money is fixed with the banks or financial institution, the investor can enjoy a good amount of interest on his investment, while keeping his principal amount secure. So in the long run, certificate of deposits are beneficial, as there is zero or less risk involved.
