OG(VR)#79

#79

To evaluate a plan to save money on office-space expenditure by having its employees work at home, XYZ company asked volunteers from its staff to try the arrangement for six months. During this period, the productivity of these employees was as high as or higher than before.

Which of the following , if true, would argue most strongly against deciding, on the basis of the trial results, to implement the company's plan?

(C) Other companies that have achived successful results from work-at-home plans have work forces that are substantially larger than that of XYZ.

針對(c)的選項.在詳解上" while the difference in the size of the work force may be significant to the success of the plan , such a determinination can not be derivated from the trial results.針對劃線部分.可否請版上的大牛們解說一下??