Final answer:
Width is the number of different product lines a company carries, while length refers to the total number of items. Depth represents the number of versions offered of each product. Consistency is how closely related the product lines are.
Step-by-step explanation:
Width is the number of different product lines a company carries, while length refers to the total number of items a company carries within those product lines. Depth, on the other hand, represents the number of versions offered of each product in the line. Consistency refers to how closely related the product lines are in terms of end use, production requirements, and distribution channels.