ETF is an example of d. unlisted investments, in that it is not a direct form of investment made into the stock market.
Explanation:
Mutual funds and shares are methods of investing which put the money directly to the investment in the market either through a firm or individually by the shareholder.
ETF is a virtual share or fund in which the people are able to trade with equivalence in the real market but they are dealing in virtual for their investments which means the money is not actually directly put into the market so the investment is not listed with the stock market like it would be in other cases of investment
