Which packaging innovation was originally developed for military use in the 1940s before becoming a household staple that revolutionized food storage?

The history of packaging innovations has dramatically transformed how we preserve and transport food. One breakthrough invention in particular revolutionized the food industry, extending shelf life and changing household kitchens forever. This poll tests your knowledge of pivotal packaging developments that shaped modern food consumption. Can you identify the groundbreaking packaging technology that military needs helped bring to civilian markets?

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Vacuum sealing technology
Aluminum beverage cans with pull tabs
Tetrapak aseptic cartons
Plastic cling wrap (PVDC film)