Which packaging innovation, introduced in 1952, revolutionized retail by enabling self-service shopping and is credited with helping transform grocery stores from clerk-service to modern supermarkets?

Throughout history, packaging innovations have dramatically transformed retail experiences and consumer relationships with products. From preservation techniques to branding opportunities, packaging has been a critical component in the evolution of commerce. Test your knowledge about a groundbreaking packaging innovation that changed shopping habits forever and influenced modern retail design principles.

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The resealable zip-top plastic bag
The cardboard six-pack carrier
The plastic shopping bag with handles
The clear cellophane window on food packaging