PT 41 S3 Q21

   Labor representative:Social historians have shown conclusively ... ...

Which one of the following, if true, most helps to resolve the apparent discrepancy described by the labor representative?
(A) Until recently it was widely believed that strikes do not generally improve working conditions.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: "Resolve/Explain" Questions, Set 2 - Difficult/Uncommon Mix (25Q)