The National Trust in Britain plays an increasingly important part in the preservation for public enjoyment of the best that is left unspoiled of the British countryside. Although the Trust has received practical and moral support from the Government, it is not a rich Government department. It is a voluntary association of people who care for the unspoiled countryside and historic buildings of Britain. It is a charity which depends for its existence on voluntary support from members of the public. Its primary duty is to protect places of great natural beauty and places of historical interest. Members of the National Trust are people
A. who are government employees and get their pay from the government. B. who are interested in dealing with social problems. C. who are rich enough to work for the organization without pay. D. who care for the unspoiled countryside and historic buildings in Britain.