Which retail pioneer introduced the revolutionary 'self-service' shopping model in 1916, allowing customers to select their own items rather than having clerks gather products for them?

Throughout history, certain retail innovations have fundamentally changed how people shop and consume products. Behind many of these transformations were visionary CEOs who revolutionized their industries through bold decisions and strategic foresight. This trivia question focuses on one such pioneer who dramatically altered the retail landscape in the early 20th century. Test your knowledge of retail history and the leaders who shaped modern commerce!

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Clarence Saunders (Piggly Wiggly)
Sebastian Spering Kresge (S.S. Kresge Company/Kmart)
James Cash Penney (J.C. Penney)
Frank Winfield Woolworth (F.W. Woolworth Company)