Which pioneering retail initiative first introduced comprehensive sustainability ratings for natural products in mainstream stores?

In the ever-evolving retail landscape, sustainable and eco-friendly products have transformed how consumers interact with the natural world. This trivia explores a pivotal moment in retail history when a major innovation changed how natural products were marketed and sold to environmentally conscious consumers. Test your knowledge about this significant shift in retail strategy that helped bring nature-based products into mainstream commerce.

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Whole Foods' Eco-Scale (2011)
Target's Clean Label Standard (2014)
Walmart's Sustainability Index (2013)
Amazon's Climate Pledge Friendly (2016)