▲閱讀下文，回答第 41-45 題
       People take vacations for a variety of reasons. Some travel for enjoyment and relaxation.Others hope to meet exciting people or see jaw-dropping sights on their journey. Many otherpeople use their vacation to give back to society. This type of holiday is called a volunteervacation or “voluntourism”, which combines giving with traveling. “Voluntourists” are touristswho go on this type of vacation. They typically join a volunteer project through an organizationand pay for their own trips, while working for a certain number of hours or days.
        A range of projects are available for voluntourists to choose from: elderly/child care,wildlife and animal care, teaching, community building, medical and health opportunities, andenvironmentalism and conservation, to name a few. If voluntourists want to work with kids,they can look into projects in places like Thailand or South Africa, where they can help providebasic childcare. Those who have special skills can help build homes for the poor in places suchas Honduras and Ethiopia. Another option is to work in a hospital to bring healthcare andeducation to many people in India or Peru.
       Taking a volunteer vacation can be a once-in-a-lifetime experience to meet new people,learn about their culture, and, most importantly, help them with their needs. Although such arewarding experience does not come for free, this is the best vacation of all for volunteers. Areyou interested in helping people around the world to live a better life? Sign up for a volunteervacation today!
【題組】41. What is the main idea of the passage?
(A) The benefits of volunteer vacation.
(B) The mystery of volunteer vacation.
(C) The spending of volunteer vacation.
(D) The complaints of volunteer vacation.