In ancient Mesopotamia (circa 2000 BCE), what medium was commonly used for the world's earliest known form of product reviews and quality certifications?

Before online shopping and five-star ratings, ancient civilizations had their own methods of product evaluation and consumer guidance. This poll explores how ancient Mesopotamians, one of the world's earliest urban societies, shared product information and quality assessments for goods in their marketplaces. Test your knowledge about the fascinating intersection of commerce and communication in the cradle of civilization!

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Clay tablets with cuneiform inscriptions detailing product quality, origin, and fair pricing standards
Papyrus scrolls posted at market entrances with merchant ratings and product recommendations
Colored flags at merchant stalls indicating quality tiers based on official inspector assessments
Stone obelisks erected in marketplaces listing approved merchants and their specialty goods