Which innovative advertising technique did Ancient Egyptian merchants use to distinguish their products in marketplaces around 1500 BCE?

Before digital billboards and social media campaigns, ancient civilizations developed sophisticated marketing techniques to promote their goods and services. From town criers in Mesopotamia to elaborate frescoes in Pompeii, the art of advertising has ancient roots. This trivia question explores how Egyptian merchants created product recognition in a world before mass media and modern branding concepts.

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Branded pottery seals stamped on goods to indicate origin and quality
Hiring professional shouters who used rhythmic chants about product benefits
Distributing small papyrus scrolls with product information to potential customers
Painting elaborate murals on city walls showing customers enjoying their products