Which measure would be most useful to prove authenticity of a handicraft product?

Correct answer: Giving certified information about artisan, region and material

The direct answer is B: give certified information about the artisan, region, and material. Authenticity means showing that a product is genuinely made by the claimed craft tradition and is not falsely presented. Step by step, the buyer needs to know who made it, where the tradition comes from, and what material or process was used. Reliable labels, certificates, or traceable records can support this trust. Option B is correct because it provides evidence that can be checked. A is wrong because an unlabelled product gives little proof of origin or maker. C is wrong because hiding feedback does not prove authenticity. D is wrong because a low price may attract buyers but cannot prove who made the item or how it was produced. Exam cue: authenticity is linked with traceability, certification, and honest labelling, not merely price or appearance.