【单选题】

Passage 4

When men get stick，they act like babies ，say women .But maybe the fairer sex should learn something useful from these guys ——it could save their lives， say researchers at the University of Michigan.
When women have a heart attack ,they’re more likely to put off seeking help the men ,and after an attack,they’re less likely to take steps to improve their health . What’s the reason for the different responses The results of a survey suggest that women are too tough; they think heart problem are simply not a big deal . When StevenErickson and his colleagues asked 348 men and 142 women who had been admitted to the hospital for a heart attack about their symptoms and medication (用药情况)，they found that even though the women had more symptoms and were taking more medicine they rated their disease as being no more severe than the men did . For more on women and heart disease ,go to www. americanheart. org.
The underlined expression "the fairer sex" in Paragraph 1 refers to ______ .
A．menB．babiesC．women
D、researchers