Which pioneering sustainability initiative did REI (Recreational Equipment, Inc.) implement that became a retail industry trendsetter?

Major retailers are increasingly adopting sustainability initiatives to reduce their environmental impact and appeal to eco-conscious consumers. These efforts range from renewable energy investments to plastic reduction programs and sustainable sourcing. Test your knowledge about how one leading outdoor retailer has pioneered sustainability practices that have influenced the entire industry.

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Their 'Opt Outside' campaign closing stores on Black Friday to encourage outdoor activity
The introduction of a comprehensive product sustainability standards program that rates products on environmental impact
Becoming the first major retailer to achieve zero-waste operations in all store locations
Creating the industry's first biodegradable credit card made from plant materials