Why are curfews established for teenagers?

Why are curfews established for teenagers?
【正确答案】：（1）Teenagers tend to be rebellious yet vulnerable to negative influences, and inclined towards dangerous situations while staying outside after night falls. They should be protected from crimes on the one hand, and from violating laws themselves on the other.（2）Parents worry about their children’s safety and formation as a citizen. Curfews can serve as a method of ensuring teenagers’ security.
【题目解析】：细节线索题。文章第一段提到青少年的特点以及父母的焦虑，并进而提出需要一个确保青少年安全的方法，而宵禁正是这样的方法。为青少年设立宵禁的原因由此可见。