In what way does Schlosser critique the sourcing of fast-food ingredients?

Schlosser critiques the sourcing of fast-food ingredients primarily by discussing the industrial farming practices and their environmental impacts. In "A Look at the Fast-Food Industry," he illuminates how large-scale agricultural production focuses on maximizing efficiency and profit, often at the expense of environmental health and sustainability. This includes the overuse of pesticides, fertilizers, and monoculture farming, which can lead to soil degradation, water contamination, and a decrease in biodiversity. By addressing these practices, Schlosser brings attention to the broader implications of the fast-food industry's sourcing methods, encouraging readers to consider the hidden costs of cheap and abundant food.

The other options relate to aspects that are either not central to Schlosser's critique or do not fully encompass his primary arguments regarding sourcing. For example, while organic farming practices are mentioned in discussions about food production, Schlosser does not predominantly praise them within his critique of the fast-food industry. He also does not focus on local sourcing or technological innovations as central themes in critiquing ingredient sourcing; instead, his emphasis lies on the systemic issues arising from the industrial agricultural model.