Gwyn is middle aged and trying to improve her retirement prospects. She knows she needs a blend of stocks and bonds in her portfolio but, as a working mom, she just doesn't have time to research which stocks and bonds would be appropriate for retirement portfolio. Which of the following would you recommend to help her meet her retirement goals?

A lifecycle mutual fund that blends stock and bond investments based on the investor's age

A stock mutual fund that invests in a variety of stocks

A bond mutual fund that invests in a variety of bonds

A real estate mutual fund

An exchange$-$traded fund