Which packaging innovation, introduced commercially in the 1940s, was initially met with consumer resistance but eventually revolutionized food retail by extending shelf life and allowing self-service shopping?

The history of retail and product packaging is filled with innovations that transformed how we shop and consume. One particular packaging breakthrough in the mid-20th century revolutionized grocery shopping, product preservation, and even cooking habits. This invention fundamentally changed supply chains and consumer behavior worldwide. Test your knowledge about this pivotal packaging innovation that we now take for granted!

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Cellophane wrap
Frozen food packaging
Shrink-wrap technology
Vacuum packaging