Which revolutionary product packaging innovation from the 1950s helped transform American shopping habits and is credited with enabling the rise of supermarkets and self-service retail?

Throughout history, product packaging has evolved dramatically, transforming both consumer behavior and brand marketing strategies. Some packaging innovations completely revolutionized entire industries, changing how products were preserved, transported, and marketed. This trivia question focuses on a pivotal packaging development that had far-reaching effects on American consumer culture and product accessibility.

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Cellophane wrap
The aerosol spray can
The standardized cardboard box
The shopping cart