According to Cosmoses and Toolby (1987), Solving Real-World Problems Such

According to Cosmoses and Toolby (1987) , solving real-world problems such as, "How do I tell friend from foe?" and "When do I fight, and when do I flee?" are examples of what phenomenon?

A) natural selection operating in the intimate level
B) natural selection operating in the cognitive level
C) goodness of fit
D) survival of the fittest