Which statement correctly distinguishes product line extension from brand extension?

• A. Product line extension adds new items within an existing category; brand extension uses a different brand to enter new categories.
• B. Product line extension adds new items across the entire product portfolio; brand extension keeps within the same product category.
• C. Product line extension relies on pricing changes; brand extension relies on advertising changes.
• D. Product line extension adds new items within an existing category; brand extension uses the brand to enter new product categories.

Answer: (D)

Expanding within an existing product category versus using the brand to enter new product categories. A product line extension adds new items within an existing category, such as adding flavors, sizes, or variants to the current line. This keeps everything in the same product family while giving consumers more choices they already associate with the brand. Brand extension, on the other hand, uses the same brand name to launch products in a new category, leveraging the brand’s reputation to enter a different market—like a beverage brand introducing snacks or apparel under the same name. The statement that captures both ideas—adding new items within an existing category and using the brand to enter new product categories—is the best fit. The other ideas mix up whether a different brand is used, whether the category changes, or whether the distinction rests on pricing or advertising rather than category expansion.