PT 64 S4 Q19

It can be inferred that the author of passage B would regard which one ... ...

It can be inferred that the author of passage B would regard which one of the following as a mistaken assumption underlying arguments like that made in passage A?
(A) Most of the physical features characteristic of modern humans developed as the result of evolutionary pressures.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Oct 2011 LSAT (PT64): Reading Comprehension