How do national parks fit in with muir's ideas about preservation?

John Muir thought that the parks should be preserved for poor people as well as rich. Thus, Americans of all sorts shared the same need for getting back in touch with nature. Though Recreation on National Parks is commonly expressed purpose of the parks which usually means outdoors exercise in the form of hiking, camping, fishing or boating, it fits on John Muir understanding that recreation should be a re-creating of our inner selves through immersion in nature. He wrote in his book of “Our National Parks” on 1901 that the parks should offer winldness which is another word for nature and that wildness is a necessity. Moreover, he belived that a nation of tired, nerve-shaken, over-civilized people seek in the parks an escape from the vice of over-industry and the deadly apathy of luxury. 

the answer is a) high entry costs

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