Which retail innovation, introduced in 1916 by Clarence Saunders, revolutionized shopping by allowing customers to select their own merchandise rather than having clerks gather items for them?

Throughout history, certain retail innovations have fundamentally transformed how we shop and conduct commerce. From ancient marketplaces to modern shopping experiences, technological and conceptual breakthroughs have shaped the evolution of retail. This trivia tests your knowledge about a pivotal retail innovation that revolutionized shopping in the early 20th century and laid the groundwork for modern retail experiences.

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Piggly Wiggly (the first true self-service grocery store)
Marshall Field's 'Bargain Basement' (the first department store clearance section)
A&P Economy Stores (the first chain store model with standardized pricing)
Woolworth's 'Five and Dime' (the first fixed-price merchandising concept)