CR9.74 The population of desert tortoises in Targland’s Red Desert has declined, partly because they

are captured for sale as pets and partly because people riding all-terrain vehicles have damaged their

habitat. Targland plans to halt this population decline by blocking the current access routes into

the desert and announcing new regulations to allow access only on foot. Targland’s officials

predict that these measures will be adequate, since it is difficult to collect the tortoises without a

vehicle.

Which of the following would it be most important to establish in order to evaluate the officials’

prediction?

A. Whether possessing the tortoises as pets remains legally permissible in Targland

B. Whether Targland is able to enforce the regulations with respect to all-terrain vehicle entry at

points other than the current access routes

C. Whether the Red Desert tortoises are most active during the day or at night

D. Whether people who travel on foot in the Red Desert often encounter the tortoises

E. Whether the Targland authorities held public hearings before restricting entry by vehicle into the Red Desert

此题我选择了D，因为我认为如果人们不行也可以捉到tortoises，那政府管制对将不会阻止tortoises的减少。正确答案是C为什么？