NO.PZ2019012201000006
问题如下：
Hankwood Fund has written policies stating that the fund does not engage in shareholder activism. Therefore, the fund can benefit from improved performance but without the costs for engagement. The effect described above can be seen as a:
选项：
A.shareholder engagement
B.activist investing
C.free rider problem
解释：
C is correct.
考点：Shareholder engagement
解析：所谓的"搭便车问题"，说的就是一些不积极参与管理的投资者也可以从其他投资者的积极参与中获得收益。具体来说，假设基金经理积极地参与到公司的运营管理中，通过改善其经营业绩成功地提升了该公司的股价。在这种情况下，那些没有积极参与管理的投资者也能从提升的股价中获得收益。
能解释一下这个和shareholder engagement的区别吗，为什么activities 要求百分之10左右的股权而不是越多越好
