It can be inferred from the passage that the Pin Factory model would continue ... ...

It can be inferred from the passage that the Pin Factory model would continue to be an “underground river” (line 54) were it not for
(A) the fact that economics has always been a discipline with scientific aspirations
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Dec 2012 LSAT (PT 68): Reading Comprehension