PT 37 S2 Q14

In response to office workers’ worries about the health risks associated ... ...

Which one of the following, if true, most undermines the researchers’ conclusion?
(A) Few of the office workers surveyed participated in regular health programs during the year in question.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: "Weaker" Questions, Set 1