The process of giving a name or a sign or a symbol etc., to a product is called:

Option 1 -> Branding is the process of creating a unique name, symbol, design, or combination of these elements to identify and distinguish a product from competitors.

Option 2 -> Labelling refers to designing and attaching a descriptive tag or information panel to a product that provides details like ingredients, instructions, and manufacturer information.

Option 3 -> Grading is the process of classifying products into different categories or classes based on quality standards, size, or specific characteristics.

Option 4 -> Marking is a general term for putting identification marks on products, but it's not the specific marketing terminology for creating product identity.

Hence, Option 1: Branding -> Branding specifically refers to the process of giving a name, sign, symbol, design, or any combination thereof to identify a product and differentiate it from competitors in the marketplace. It creates a unique identity for the product. -> correct