The number of Kohimata desert rose plants has declined, partly because they are captured for sale and partly because people riding SUVs have damaged their natural habitat. Kohimata plans to halt this decline by blocking the current access routes into the desert and announcing regulations to allow access only on foot that too only in certain zones. Kohimata's officials predict that these measures will be adequate, since it is difficult to collect the roses without a vehicle.
Which of the following would it be most important to establish in order to evaluate the officials' prediction?
A. Whether trade in desert rose plants is legally permissible in Kohimata
B. Whether Kohimata is able to enforce the regulations with respect to all-terrain vehicle entry at points other than the current access routes
C. Whether the roses are seen cyclically or throughout the year.
D. Whether people who travel on foot in the Desert often encounter the desert rose plants.
E. Whether the Kohimata authorities held public hearings before restricting entry by vehicle into the Desert.