请教各位大侠，对OG 137的疑问

137. A study of marital relationships in which one partner's sleeping and waking cycles differ from those of the 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.

Which of the following, if true, most seriously weakens the argument above?

(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.

(B) The sleeping and waking cycles of individuals tend to vary from season to season.

(C) The individuals who have sleeping and waking cycles that differ significantly from those of their spouses tend to argue little with colleagues at work.

(D) People in unhappy marriages have been found to express hostility by adopting a different sleeping and waking cycle from that of their spouses.

(E) According to a recent study, most people's sleeping and waking cycles can be controlled and modified easily.

这题的思路： mismatched circles → more violent arguments → jeopardize marriage

问削弱。答案选D，但是我觉得OG的解释有问题。The argument assumes that mismatched sleeping and waking cycles precede martial problems. Choice D weakens the argument by indicating that this assumption is false.

我觉得D的错误，是在于它认为 unhappy marriage → mismatched circle

提干的推理过程是A → B，而D的推理过程是 B → A

此外，我对A答案也颇有好感，它的思路是一样作息时间的夫妇也吵架，也可能危及婚姻，那么就否认了是mismatched circles导致婚姻危机这个前提啊，这不是削的很弱很弱吗？

同问，这道题也不太明白。

尤其是og的d的解释：Choice D weakens the argument by indicating that this assumption is false.注意了一下，这是og中唯一一个说反对前提而构成削弱的。狒狒说应该尽量承认前提的正确性，主要批驳的是前提和结论间的关系，og这样说是不是不正确的呢？

作息正常的夫妻间的问题有可能是其它因素引起的，但不能排除作息不合拍夫妻间的问题就不是作息引起的，这是两回事，没有关联。

D即是说ARGUMENT倒因为果，逻辑错误~~

现在明白了

谢谢！