Which of these food retail innovations was introduced FIRST to the market?

Test your knowledge about groundbreaking retail innovations in the food industry that changed how we shop for and consume food products. These innovations have transformed the culinary landscape and shopping experiences worldwide. Can you identify which major retail strategy revolutionized the grocery shopping experience first?

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Meal kit delivery services (like Blue Apron)
Self-checkout lanes in grocery stores
Online grocery ordering with same-day delivery
Cashierless grocery stores (like Amazon Go)