Exam PRINCE2-Foundation topic 1 question 56 discussion

The project board members each have a specific area of focus for project assurance, namely business assurance for the executive, user assurance for the senior user(s) and supplier assurance for the senior supplier(s). So the correct answer is C - supplier

Product assurance (D): Product assurance might refer to ensuring that products meet specifications or requirements, but this would usually be handled by product teams or technical experts, not the Project Board. The Project Board oversees the project at a higher level, ensuring overall quality rather than focusing on individual product assurance. In contrast, quality assurance is a direct responsibility of the Project Board in ensuring that the project's outputs (products, services, or results) meet the required standards and expectations. This is why quality is the correct answer.

Project assurance function is when each board members has their own responsibilities reflecting their specific interests:  Business assurance.  User assurance.  Supplier assurance.

board is project assurance and supplier assurance is a subcategory of project assurance. [maybe note: Product != Project ]

Because the supplier is a member of the Project Board...

why is it not product assurance?