The Evolution of Larger Brains in Primates May Be Due

The evolution of larger brains in primates may be due to all of the following except:

A) the shift from nocturnal to diurnal activity after the extinction of the dinosaurs.
B) greater involvement of the brain in organizing visual experience.
C) the need to integrate sensory and motor information to survive more effectively in trees.
D) increased emphasis on the hand in place of teeth and jaws.
E) development of very specialized dental formulas.