Final answer:
The central idea of the article is best expressed by the statement that the "ugly food" programs have both benefits and drawbacks, capturing the nuances of the sustainability debate within market economies.
Step-by-step explanation:
The question asks which sentence best states a central idea of the article. Based on the provided text that discusses the need for an attitude shift towards sustainability, the desire for variety in a market-oriented economy, the concept of McDonaldization reducing goods' variety, and the role of consumer behavior in evaluating products, the most fitting central idea seems to be articulated by option D: "Ugly food" programs have both benefits and drawbacks."
This option captures the essence of the debate presented in the article between the need for sustainable choices versus the status quo of market economies that provide a wide variety of goods, often at the cost of sustainability.