The passage indicates which one of the following about the abrasion of ... ...

The passage indicates which one of the following about the abrasion of Calvaria major pit walls?
(A)  Thinning through abrasion is not necessary for germination of Calvaria major seeds.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in June 2013 LSAT (PT 69): Reading Comprehension