Why was the united states concerned about nuclear missiles in cuba? a. the missiles stopped the united states from invading cuba. b. the missiles would be used to bully other island nations. c. the missiles were unstable and could cause ecological disaster. d. the missiles could be used to strike the united states.

answer: the risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation:

the answer is a) high entry costs