In 1916, which revolutionary retail innovation was first introduced by Clarence Saunders, forever changing how consumers interacted with products?

In the history of retail and consumer products, certain innovations have fundamentally altered how people shop and interact with merchandise. This poll explores one of the most transformative product innovations from the early 20th century that revolutionized retail by allowing customers to select products themselves rather than relying on clerks. Test your knowledge about this pivotal moment in retail history that shaped modern shopping experiences!

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

The self-service grocery store (Piggly Wiggly)
The shopping cart (initially called 'folding basket carriers')
The cash register with receipt printing capability
The retail catalog with mail-order capabilities