Final answer:
The university Futon shop has a narrow assortment, not no assortment, because it likely offers some variety within the double-sized futons such as colors, designs, or materials.
Step-by-step explanation:
The question is asking whether the university Futon shop can be said to have no assortment if it only sells double-sized futons. In retail terms, an assortment refers to the variety of products that a store offers. If a futon shop only sells double-sized futons and no other types or varieties, it has a very narrow assortment, but it cannot be said to have no assortment. There must be some variety within the double-sized futon category, such as different colors, designs, materials, or brands. The concept of no assortment would mean that the store offers absolutely no variety, which is unlikely to be the case here. Even if the product category is limited to one type, as long as there are different options within that category for the customer to choose from, the store does have an assortment.