Answer:
investment vehicle risk expected return
CDs low low
US securities low low
Corporate bonds low/medium low/medium
Stocks medium/high medium/high
Options high high
Futures high high
Pension funds low low
Mutual funds medium medium
etc.
Usually risk and expected returns are closely related, i.e. low risk investment yield lower return rates. In order for an investor to try to increase return rates and at the same time keep risk under control, they can diversify their investment portfolio. Diversification means investing in different types of vehicles.
For example, mutual funds and retirement accounts are pooled investment vehicles that invest in several different types of assets in order to reduce risk and increase return rates. For example, invest a certain % in stocks (high risk/high returns), another % in corporate bonds (medium risk/medium returns) and the rest in US securities (low risk/low returns).