Which of the Following Statements Best Describes the Cause of "Overrun

Multiple Choice

Which of the following statements best describes the cause of "overrun and overtrampled" national parks?

A) Park administrators do not use the best science available to manage park resources.
B) National parks are treated as free goods by their visitors.
C) National parks do not charge entrance fees.
D) The price of entrance to national parks is higher than other forms of recreation.