Which architectural innovation, first widely implemented in the 1950s, revolutionized retail store layouts by creating a controlled customer journey through merchandise?

Retail architecture has evolved dramatically over the decades, with store layouts becoming increasingly sophisticated to enhance customer experience and boost sales. Behind many successful retail spaces are innovative architectural principles that influence shopping behavior. Test your knowledge about a pivotal moment in retail architectural history that changed how stores are designed worldwide.

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The Gruen Transfer (forced-path layout)
The Panopticon System (central observation point)
The Sullivan Principle (form follows function)
The Bauhaus Grid (modular display system)