(3)

When we meet people for the first time，we often make decisions about them based entirely on how they look. And, of course it's something that works both ways, for we too are being judged on our appearance. When we look good, we feel good, which in turn leads to a more confident and self-assured manner. People then pick up on this confidence and respond positively towards us. Undoubtedly，what's insideis important，but sometimes we can send out the wrong signals simply by wearing inappropriate clothing or not spending enough time thinking about how others see us.

在本段的开始作者提出一种观点，即要想了解你自己的想法，必须先认识你自己。作者大段的论述后, 概括起来就是：你最喜欢什么样的衣服，最不喜欢什么样的衣服，即个人喜好问题，而事实上，所谓的个人喜好就是个人品位。因此A选项正确。