Which packaging innovation, introduced in 1963, revolutionized beverage retail by allowing products to be stacked without ring carriers, reducing packaging costs by 15%?

The history of retail has been shaped by packaging innovations that transformed how products are preserved, transported, and marketed. Some packaging breakthroughs have revolutionized entire industries, changing consumer behavior and creating new market opportunities. This trivia question focuses on a groundbreaking packaging innovation that dramatically altered the retail landscape and consumer habits. Test your knowledge about this significant milestone in retail history!

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The pull-tab aluminum can
The TetraPak aseptic carton
The PET plastic bottle
The twist-off metal cap