根据下面资料，回答题
Summer Camps for Teenagers
There are many types of summer camps for teenagers to attend. They′re a great way for teens to make friends and learn valuable lessons about life. If you′re seeking a good summer camp to attend, the first thing you should do is decide what type of camp would be most suitable to your interests and goals.
Traditional Camps
When you just want the sort of camp in classic films, a traditional overnight camp might be just what you need to grow, learn, and relax this coming summer. These sorts of camps offer more vigorous outdoors activities, yet often allow campers to customize their camping experiences.
Chewonki Camp
As one of the best summer camps in the country by Boston Magazine, this camp aims to help teens learn about natural history and ecology, and the campers get treats like sailing trips and hiking excursions, besides formal instruction in such things as kayaking, swimming, field sports, and photography.
Camp Wicosuta
As a top-rated, traditional four-week sleep away camp especially for young ladies, Camp Wicosuta has more than 30 different activities to help teens learn to cook and wash themselves, which aim to help young girls focus on building their self-confidence.
Academic Camps
Many teens like to advance their education during the summer months while also having fun.There are hundreds of academic camps for them to choose from that specialize in various academic subjects like journalism, languages, law, computers, and sciences.
What is the purpose of the activities that teach teens to cook themselves 查看材料
A.To let teens learn and get relaxed
B.To help girls learn practical skills
C.To help girls build self-confidence
D.To make teens focus on science