Which retail pioneer opened the first true self-service grocery store in 1916, revolutionizing shopping by allowing customers to select their own merchandise without clerk assistance?

The way we shop today seems obvious, but the retail experience has dramatically evolved throughout history. Before the early 20th century, customers rarely selected their own merchandise - instead, clerks would fetch items from behind counters upon request. This poll explores a pivotal innovation that fundamentally changed retail forever and established the foundation for modern shopping experiences we take for granted today.

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Clarence Saunders (Piggly Wiggly)
Sebastian S. Kresge (Kmart)
Frank W. Woolworth (Woolworth's)
James Cash Penney (JCPenney)