PT 65 S1 Q10

A new process enables ordinary table salt to be fortified with iron. This ... ...

Which one of the following most accurately describes the role played in the argument by the statement that people consume salt in quantities that would provide iron in significant amounts?
(A) It is the conclusion of the argument.
(B) ...
(C) ...
(D) ...
(E) ...

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