The medieval scholar made almost no attempt to investigate the anatomy of plants, their mechanisms of growth, nor the ways where each was related to the other.
(A) nor the ways where each was related to the other
(B) nor how each was related to some other
(C) or the way where one is related to the next
(D) or the ways in which they are related to one another
(E) or the ways that each related to some other
I go for D if it reads .."Or the ways in which they WERE...."