Question

You are saying that everyone should be equal,and

You are saying that everyone should be equal,and this is _I disagree.
A.what B.why C.how D.where
为什么选d不选b

Answer 1

你就算选A也别选B
what还可以理解成 你说的这个我不同意
用why的话是缺成分的，除非前面说的那句话有明显的错误或者这里的I在之前已经表达过与saying之后的内容相左的看法。
这里说的是this is with which i disagree, disagree with 是一整个词组，介词+which 相当于where 这里是 with which ，翻译成这是我不赞同你的地方。