Which of these was a factor in the us entry in world war l?

Sinking of the Lusitania

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 correct answers are 1, 2 5, 6