Why are many biologists skeptical about the concept of group selection?
a. Classic evolutionary theory proposes that the processes of natural selection operate only at the individual, not the group level.
b. Humans have not lived in groups for very long in their evolutionary history.
c. Evolutionary theory does not have any interesting in examining the concept of altruism.
d. Evolutionary theory believes it does an adequate job of explaining altruism with concepts such as rewards and costs.
Answer: A
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