Because cerebral lateralization is present in all five vertebrate classes,it must have fundamental survival advantages.It has been suggested that this advantage is that in some instances
A) it may be more efficient for neurons performing the same function to be localized in the same hemisphere.
B) it may be easier for the brain to simultaneously perform two different analyses if they are housed in different hemispheres.
C) cerebral lateralization has accelerated the course of evolution.
D) all of the above
E) both A and B

Question

Quizplus · Accepted Answer

The passage suggests that cerebral lateralization provides fundamental survival advantages because it may be more efficient for neurons performing the same function to be localized in the same hemisphere (choice A) and it may be easier for the brain to simultaneously perform two different analyses if they are housed in different hemispheres (choice B). While the passage does not state whether cerebral lateralization has accelerated the course of evolution (choice C), it does suggest that it has been present in all five vertebrate classes. Therefore, the best answer is E, which includes both A and B.

Because Cerebral Lateralization Is Present in All Five Vertebrate Classes,it