阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
Holidays are really important. Many of us have childhood memories of summer holidays when we were taken away from home to experience new environments and learn in different ways. Hut holidays are expensive and, for those families on low salaries or living on Benefits，they are often unobtainable.
