(a) The choice whether to register as an organ donor is a decision based on comparing costs and benefits. Suppose that registered organ donors receive priority on organ waiting lists. What are the costs to registering? What are the benefits? How do the benefits of registering vary depending on the potential registrant's health? his age? his blood type? The organ he is most likely to need? What other factors might affect the potential benefit of registering as an organ donor? ANS