A、Hair-loss. B、Ladybugs. C、Ageing. D、Sexism. D关于女人最害怕的东西，原文中提到了几个一般但又令人信服的答案，例如性别歧视、遭到批判和被人讨厌以及关系破裂等。因此答案为D。

What scares a woman the most?
    When I did an Internet search on this question, I got all sorts of false results: ladybugs, hair-loss and all other meaningless things.
    Then there were somewhat generic but convincing answers like sexism, being judged and disliked, and failed relationships.
    However, I think what a woman should fear the most is other women.
    If you have had trouble working with a male boss, you should try working for a female. Then you would know what I am talking about.
    Female bosses can be as sexually prejudiced as males. Even though they must have been in the same position themselves, they show lack of confidence in their female subordinates, get jealous of them and prefer male colleagues.
    They can very easily feel threatened, and if you perform too well, they might think you are trying to outshine them.
    Anything can make them dislike you—your looks, your style, your popularity and even your inability to make mistakes, which robs them of the chance to denounce you.
    Prominent women such as Oprah Winfrey and Arianna Huffington have agreed with my thoughts on more than one occasion.
    One woman waging war against another is not just limited to the workplace.
    Under the warm and cozy facade of many female friendships lie the envy and jealousy, which is colder than the insides of an evil ice queen.
    A mother-in-law can hate her daughter-in-law just because her son is happy with her and doesn’t seem to need his mother anymore.
    There are no age barriers to stop one woman from hating or being jealous of another woman.
    Women need to understand that one woman’s success does not necessarily mean another’s doom.
    I’m not claiming that all women are drooling for the blood of other women, but surveys and studies have shown that 85％ of women have faced more anger from other women than from men. Women tend to buy nice things to impress other women, while men tend to do the opposite.
    I think that says something in itself.
    Questions 16 to 18 are based on the recording you have just heard.
    16. Which is a generic but convincing answer about what scaring a woman the most?
    17. What should a woman fear the most according to the speaker?
    18. What does the speaker say about female friendships?