Which sustainable production practice was pioneered by the 2022 film 'The Batman' that has since been adopted by several major studios?

The film and television industry has been making significant strides toward sustainability in recent years. From reducing carbon footprints on massive production sets to implementing innovative recycling programs for props and materials, studios are embracing eco-friendly practices. This trivia question tests your knowledge of how major studios are transforming their production processes to address environmental concerns while maintaining the magic of moviemaking.

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Using plant-based food service materials exclusively on set
Implementing a closed-loop battery system for powering remote shooting locations
Creating all costumes from recycled fabrics and materials
Generating all special effects using carbon-neutral computing centers