求助：陈向东P154第3题

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陈向东P154第3题
3、Psychological maladjustment in children is caused by the stress of the birthing process as is proved by the discovery of a positive relationship between the duration of the mother's labor and the amount of time the child spent crying in the first month of life.
Which of the following, if true, LEAST damages the author's assertion?
A.There is no relationship between the amount of time spent crying and psychological maladjustment.
B. Behavior indicative of psychological malajustment does not appear until the third month of a child's life.
C. From the infant's point of view, a hurried labor is more stressful than a gradual, slow delivery.
D. The estimates of the furation of labor were based on obstetriciam's estimates of the time of the onset of labor.
E. The infants who have experienced the greatest stress during birth are often too weak to cry for extended periods of time.
答案是：D
按照《陈向东》以及搜到的03年几位前辈的解释，都说：根据题干论述，stress/duration of labor/the amount of time crying 三者是正比关系。
但是，我怎么读题，都只能得出：psychological maladjustment和stress有关，但是没说是什么关系，正比还是反比、然后又说了duration和the amount of time之间存在正比的关系。但是如何确定这二者与stress的关系呢？
跪求好心人赐教！！！

xutongnew

无人问津，顶起来，大家帮帮忙！

xutongnew

NN赶快现身啊！！！自己顶起来