问题如下：
Bard, CFA, is trying to protect the investment against the losses in the financial market. Which of the following circumstance will most likely for him to complete the target?
选项：
A.The financial market is just normal
B.There happened a financial crisis.
C.The correlation between the portfolio’s securities is high.
解释：
A is correct.
When the financial market is operating normally, the diversification for investment portfolios are the most effective. On the contrary, if there is severe market turmoil, the portfolio diversification will show to be relatively ineffective. The lower the correlation between securities in the portfolios, the better diversification effect will be.
老师 这道题考察的是什么知识点？
