Question ID:PT51 S3 Q15 Passage:Sociologist:  A contention of many of my colleagues‚ that the large difference between the wages of the highest- and lowest-paid workers will inevitably become a source of social friction‚ is unfounded. Indeed, the high differential should have an opposite effect, for it means that companies will be able to hire freely in response to changing conditions. Social friction arises not from large wage differences, but from wage levels that are static or slow changing. Stem:Which one of the following is an assumption required by the sociologist's argument?  Correct Answer Choice:AChoice A:When companies can hire freely in response to changing conditions, wage levels do not tend to be static or slow changing. Choice B:People who expect their wages to rise react differently than do others to obvious disparities in income.  Choice C:A lack of financial caution causes companies to expand their operations. Choice D:A company's ability to respond swiftly to changing conditions always benefits its workers. Choice E:Even relatively well-paid workers may become dissatisfied with their jobs if their wages never change.