Read the passage below and choose one correct answer for each question

The three national parks in Wales are visited by an estimated 15 million people each year. Recreation and tourism are important contributor to the local economy and can contribute to the social stability of modern rural communities. The National Parks are responsible for promoting enjoyment and understanding of the special qualities of their particular park. This is achieved through visitor centers, guides and books, management of sites and maintaining in excess of 5,000 km of rights of way. All three parks operate full time ranger services.

Of the 15 million about 90% of these arrive in private motor cars, which is a key challenge in terms of managing visitors but also environmental pressure. The parks have been at the forefront of trying to develop and promote integrated public transport that facilitates and encourages modal shift and brings economic and service benefits to local people.