Which retail innovation, first introduced in 1916 by Clarence Saunders, allowed customers to select their own merchandise and is credited with revolutionizing the shopping experience?

Before this invention, grocery shopping was a completely different experience. Customers would give their shopping lists to clerks who would fetch items from behind counters. This innovation transformed retail by allowing customers to browse and select products themselves, dramatically increasing the variety of goods stores could offer while reducing labor costs. Test your knowledge about this revolutionary retail concept that fundamentally changed how we shop!

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Self-checkout kiosks
The self-service grocery store (Piggly Wiggly)
Shopping carts (invented by Sylvan Goldman)
Barcode scanning systems