Final answer:
Sarj's talents as a specialist in product design would be used in the core component category of the Product Component Model.
Step-by-step explanation:
In the Product Component Model, Sarj's talents as a specialist in product design would most likely be used in the core component category.
The core component category includes the essential components of a product that directly contribute to its function and performance. This includes the functional design, which focuses on the shapes and dimensions of all physical components.
As a specialist in product design, Sarj's responsibility for the product's functional design aligns with the core component category, as it directly contributes to the product's functionality.