Q:Write a multi-choice question for the following article, with the given choices and answer: Article: Each country has many kind people who volunteer to take care of others. For example, some high school and university students in the US often spend many hours as volunteers in hospital or old people's homes. They read books for the people or they just visit them and play games with them or listen to their problems. Other young volunteers go and work in the homes of the sick people. They clean up their houses or do the shopping. For boys who don't have fathers there is an organization called "Big Brothers". University students and other people take these boys to play baseball games and help them get to know things that boys usually learn from their fathers. Each city has a lot of clubs where boys and girls can go to play games or take part in other activities. Some of these clubs show movies or have short trips to the mountains, the beaches or the museums. Most of these clubs use a lot of high school and university students as volunteers because they can understand the problems of these boys and girls more easily. Volunteers believe that some of the happiest people in the world are those who help to bring happiness to others. Options: A The happiest people in the world are those who join some clubs. B Bringing happiness to others make them the happiest people in the world. C The happiest people in the world are those who make themselves happy. D The happiest people in the world are those who are young and healthy. Answer: B Bringing happiness to others make them the happiest people in the world. Question:
A:
What do volunteers believe ?