OG-137 解釋內容求教

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.

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

请问该如何解释OG所指的错误??

        i guess A is wrong, please check you answer

        it is a typical logical question of biology/physic

        the same logic error in these biology/physic questions is causal oversimplification

        whether A-->B or B-->A is indefinite

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