Question ID:PT93 S2 Q15 Passage:The introduction of mass production techniques in modern industrial economies allowed the owners of industries to lower prices because they could employ fewer workers, many of whom required little training. The lower prices allowed workers to buy goods that they previously would not have been able to afford. But since jobs for workers with little training are more vulnerable to elimination than those for more highly trained workers, _______. Stem:Which one of the following most logically completes the argument? Correct Answer Choice:DChoice A:highly trained workers have more purchasing power in modern industrial economies than workers who are less trained Choice B:the introduction of mass production techniques has decreased benefits for workers as it has increased the profits for owners of industries Choice C:even the highest paid employees in modern industrial economies are never able to achieve job security Choice D:a source of increased purchasing power for workers in modern industrial economies also undermines their job security Choice E:the percentage of workers who can afford to purchase goods produced by modern industrial techniques is shrinking