A Major Limiting Factor to Success of Parks and Reserves

A major limiting factor to success of parks and reserves in developing nations would be

A) a lack of biodiversity in those countries.
B) a lack of area suitable to set aside as a park or reserve.
C) the lack of scientific data to manage the parks and reserves.
D) the lack of money and infrastructure to manage the parks and preserves.
E) a lack of interest in the development of parks and preserves.