Question ID:PT85 S3 Q22 Passage:Insurers and doctors are well aware that the incidence of lower-back injuries among office workers who spend long hours sitting is higher than that among people who regularly do physical work of a type known to place heavy stresses on the lower back. This shows that office equipment and furniture are not properly designed to promote workers' health. Stem:Which one of the following, if true, most undermines the reasoning above? Correct Answer Choice:EChoice A:When they are at home, laborers and office workers tend to spend similar amounts of time sitting. Choice B:Insurance companies tend to dislike selling policies to companies whose workers often claim to have back pain. Choice C:People who regularly do physical work of a type known to place heavy stress on the lower back are encouraged to use techniques that reduce the degree of stress involved. Choice D:Most of the lower-back injuries that office workers suffer occur while they are on the job. Choice E:Consistent physical exercise is one of the most effective ways to prevent or recover from lower-back injuries.