Which of the following types of investments typically charge the investor the lowest fees?

Index funds - passively managed. 
Index funds normally offer a low-cost way to track stocks and bonds. These are often going to charge the investor the lowest fees because they aren't managed by portfolio manages, using analysts and paying research fees. Any actively managed fund is going to have a high fee associated with it. Most will agree that an index fund, passively managed is the safest way to invest over actively managed and mutual funds.

The answer may be c ..

Ino me gusta cuando no tengo whats de los demás pero me siento tan cerca a la realidad