Which retail chain pioneered the modern self-service grocery store model in 1916, allowing customers to select their own items rather than having clerks retrieve products from behind counters?

The retail landscape has evolved dramatically over the decades. While we take many shopping conveniences for granted today, they often started as revolutionary innovations that changed consumer behavior forever. This trivia question focuses on a pivotal moment in retail history that fundamentally transformed how customers interact with products and significantly increased retail efficiency. Test your knowledge about this game-changing retail innovation!

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Piggly Wiggly
A&P (Great Atlantic & Pacific Tea Company)
Safeway
Kroger