Explanation:

- Jewellery (Correct Answer): Hallmark is predominantly recognized as a certification mark for precious metal articles, particularly gold and silver jewelry, indicating the metal's purity and authenticity.

- Agricultural Products: Hallmark does not serve as a logo or certification mark in the context of agricultural produce.

- Electronic Goods: While electronic goods may have various certification marks for quality, "Hallmark" is not associated with them.

- Electrical Goods: Like electronic goods, electrical goods have different standards and certifications, but Hallmark is not related to these.

- FMCG Goods: Fast-moving consumer goods (FMCG) do not use Hallmark as a logo or certification mark; they are more likely to have food safety and quality marks.