Which retail innovation from the 1930s was initially met with skepticism but revolutionized shopping by allowing customers to select their own merchandise without clerk assistance?

The evolution of retail has shaped not just how we shop, but how our societies function. From ancient marketplaces to modern shopping experiences, retail history reveals fascinating innovations that transformed commerce. This trivia challenges your knowledge about a pivotal moment in retail development that forever changed consumer behavior and business strategies. Test your understanding of how yesterday's retail breakthroughs created today's shopping landscape!

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The shopping cart, invented by Sylvan Goldman in 1937 for his Humpty Dumpty supermarket chain
The self-service supermarket concept, pioneered by Michael Cullen with King Kullen in 1930
The point-of-sale cash register with itemized receipts, introduced by NCR in 1936
The first retail loyalty program, launched by Betty Crocker with 'box tops' in 1937