疯狂求助 ：OG-137，谢谢。

137. A study of marital relationships in which one partner's sleeping and waking cycles differ from those of th e other partner reveals that such couples share fewer activities with each other and  have more violent arguments than do couples in a relationship in which both partners follow the same sleeping and waking patterns. Thus, mismatched sleeping  and waking cycles can seriously jeopardize a marriage.

(A) Married couples in which both spouses follow the same sleeping and waking patterns also occasionally have arguments than can jeopardize the couple's marriage

OG解释: The argument does not depend on there being only one cause of marital problems, so choice A is incorrect

我记得削弱有一种方式就叫作异因同果型，麻烦大家通过A的例子讲一讲异因同果和狗狗牛牛"它因型干扰选项"到底怎么区分阿？

谢谢阿~~

结论是：Thus, mismatched sleeping  and waking cycles can seriously jeopardize a marriage.

请问A能对这个结论起什么作用？它能weaken这个结论么？

LZ记住一点，只有（并且只要）能对原文逻辑推理过程（line of reasoning）产生作用的选项，才是（就是）有效选项——当然你要看问题问的是什么方向。