Question ID:PT41 S3 Q21 Passage:Labor representative:  Social historians have shown conclusively that if workers strike when the working conditions at their jobs are poor, those conditions usually significantly improve after five years. Although workers in this industry are familiar with this fact, they nonetheless refuse to strike even though their working conditions are poor. Stem:Which one of the following, if true, most helps to resolve the apparent discrepancy described by the labor representative? Correct Answer Choice:DChoice A:Until recently it was widely believed that strikes do not generally improve working conditions. Choice B:Most factories in this industry change ownership every two years. Choice C:Working conditions in many other industries are worse than conditions in this industry. Choice D:Workers typically plan to work in this industry only three years. Choice E:Wages in this industry have increased each year.