Which retail design element was historically incorporated into medieval European cathedral gift shops to symbolize the transition from sacred to commercial space?

Religious retail spaces serve unique purposes beyond mere commerce - they're sanctuaries of spiritual connection and community. From bookstores to gift shops attached to houses of worship, these specialized environments require thoughtful design considerations that honor traditions while meeting practical needs. Test your knowledge about how retail design principles are adapted for religious settings!

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A stepped floor that gradually descended from the cathedral level to the shop level
A series of stained glass windows depicting commerce-related biblical scenes
A central fountain where visitors could cleanse their coins before making purchases
Doorways shaped like money pouches to reference the biblical money changers