Which retail innovation, introduced in 1916 by Clarence Saunders, revolutionized shopping by allowing customers to select their own merchandise and is considered the precursor to modern supermarkets?

Before modern supermarkets and convenience stores became ubiquitous, shopping was a very different experience. Store clerks would gather items for customers from shelves behind counters—a time-consuming process for both parties. The retail innovation that fundamentally transformed this experience represents one of the most significant shifts in retail history, changing not only how we shop but also store design, marketing strategies, and consumer psychology. Test your knowledge of this pivotal moment in retail history!

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Piggly Wiggly's self-service store model
Woolworth's department store layout
A&P's grocery chain distribution system
Marshall Field's customer service protocol