PT 65 S4 Q21

Philosopher: To explain the causes of cultural phenomena,a social scientist ... ...

The claim that to explain the causes of cultural phenomena, a social scientist needs data about several societies plays which one of the following roles in the philosopher’s reasoning?
(A) It describes a problem that the philosopher claims is caused by the social scientist’s need for certainty.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Dec 2011 LSAT (PT 65): Logical Reasoning B