Women who are married sleep more soundly than women who have never married or lost a partner, according to research from an eight-year study. Furthermore, it is well established that sleeping less than six hours a night makes you 12% more likely to die prematurely than someone who sleeps up to eight hours. Therefore, getting married increases a woman's life expectancy.
Which of the following, if true, does NOT strengthen the argument above?
【选项】
Not sleeping soundly is the key reason women who cannot sleep at least eight hours a night fail to do so.
选项是否正确？