Which historical retail innovation first introduced the concept of self-service shopping, where customers could select their own merchandise without clerk assistance?

Before modern supermarkets and convenient shopping experiences became the norm, retail was a completely different world. Store clerks would fetch all products for customers from behind counters, making shopping a time-consuming process. This poll explores a pivotal innovation in retail history that fundamentally changed how we shop and set the foundation for today's customer experience. Test your knowledge about this revolutionary retail concept that transformed shopping from a service-based activity to the self-directed experience we know today.

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Piggly Wiggly stores (1916), which pioneered shopping baskets and turnstile entrances
Woolworth's five-and-dime stores (1879), which displayed all merchandise on open counters
A&P Economy Stores (1912), which introduced standardized store layouts and pricing
Montgomery Ward catalog stores (1926), which allowed customers to browse displayed samples