Which of these retail sustainability innovations was FIRST implemented at scale by a major retailer, helping to pioneer mainstream eco-friendly retail practices?

Sustainable practices are transforming the retail landscape as consumers increasingly demand environmentally responsible products and shopping experiences. Major retailers have pioneered various sustainability initiatives that have changed industry standards and consumer expectations. This trivia tests your knowledge about groundbreaking retail sustainability innovations that have made significant environmental impacts while reshaping brand identities. Can you identify which eco-friendly retail initiative came first and helped spark the sustainability movement in mainstream retail?

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Patagonia's Worn Wear program for repairing and reselling used clothing (2013)
Walmart's Sustainability Index for supplier assessment (2009)
IKEA's comprehensive ban on single-use plastics (2018)
Amazon's Climate Pledge and net-zero carbon commitment (2019)