no的一道主题选择题提问！

zjusquanchyUID: 3683452

文章是By 1950, the results of attempts to relate brain processes to mental experience appeared rather discouraging. Such variations in size, shape, chemistry, conduction speed, excitation threshold, and the like as had been demonstrated in nerve cells remained negligible in significance for any possible correlation with the manifold dimensions of mental experience.
后面省略……

The passage can most accurately be described as a discussion concerning historical views of the
Aanatomy of the brain
Bmanner in which nerve impulses are conducted
Csignificance of different cortical areas in mental experience
Dmechanics of sense perception
Ephysiological correlates of mental experience!
正确答案：E

D这个选型为什么可以排除，另外E这个选项是什么意思啊？