Which of the following is the major reason why most managers don't assess the success or failure of conservation projects, or use adaptive management? O a. Conservation managers and staff do not have the time or training to design and interpret monitoring studies. O b. Cost of long-term monitoring is high O c. Conservation managers are focused primarily on endangered species, which do not require adaptive management because of their low population sizes. O a. and b. O All of the above. O None of the above