What type of evidence does Schlosser primarily use to support his claims about the fast-food industry's workforce?

Eric Schlosser predominantly relies on statistical data to substantiate his assertions regarding the workforce in the fast-food industry. By using statistics, he provides quantifiable evidence that illustrates trends, working conditions, wages, and demographics of employees within the sector. This empirical approach strengthens his arguments by grounding them in measurable facts and broader research, which enhances the credibility of his observations about labor practices and the economic dynamics at play.

While anecdotal stories, historical documents, and direct surveys might also offer valuable insights in different contexts, Schlosser's focus on statistical data allows him to paint a comprehensive picture of the systemic issues in the fast-food industry, thereby effectively highlighting the challenges faced by its workforce.