Answer: A higher risk often means a higher return.
Explanation: Risk can be defined as the potential effect of an event, determined by combining the likelihood of the event occurring with the effect that it should occur.
Return can be defined as a gain or loss from an investment.
The relationship between risk and return is that the higher the risk, the higher the returns, however, a higher risk has a potential for loss. Hence, the word often in the statement "A higher risk often means a higher return."
A lower risk does not always mean a lower return, a lower risk has a potential for a higher return.