6.We need a more capable leader ,__ with strong will as well as good humour.

题目

6.We need a more capable leader ,__ with strong will as well as good humour.
A.who B.that C.one D.which
答案是：C
为什么不是其他选项,尤其是A?
清详细说明.谢谢!

答案

逗号后面并不构成一句句子,因此不能使用关系代词who（因为who通常引导一句定语从句）
one在这里作为leader的同位语