All product lines of a firm's product mix, i.e., all products sold by the business.

• A. Product Portfolio
• B. Product Range
• C. Product Mix
• D. Product Line

Answer: (B)

Understanding product classifications: this item asks how to name the complete set of items a business offers. The term that describes every product a firm sells—across all lines—is the product range. It covers the full assortment available to customers, not just a subset. A product line is a group of related products within that range, so it’s narrower. A product mix refers to the overall combination of all product lines and items, focusing on breadth and depth, and is often discussed in managerial terms. A product portfolio is typically used in strategic, corporate contexts to manage a collection of products and investments. So describing all products the firm sells as the product range best fits the wording.