Conservation Biologists Have to Consider Multiple Factors When They Establish

Conservation biologists have to consider multiple factors when they establish protected areas. Assume for example that there is a nature reserve already established that has no habitat degradation. However, the area is overhunted and large herbivores have been almost completely removed from the area. What, if any, is the MOST important consideration for a conservation biologist?

A) Conservation biologists do not need to make any decisions about the region because the nature reserve is already established.
B) Conservation biologists do not need to make any decision because the plants in the reserve are still there so the herbivores will come back.
C) Conservation biologists need to make decisions that will address problems with portions of the food web that depended on the herbivores for survival.
D) Conservation biologists need to make decisions that will address expanding the nature reserve because the larger a reserve the more ecosystem services it can provide.