Concept:A tied shop is a retail outlet that sells the products of only one manufacturer.Explanation:A tied shop operates under a special agreement with a single producer.It is restricted to selling that manufacturer’s product or brand only.This type of arrangement is common in industries such as petroleum and beverages.Chain stores, shopping malls, and hypermarkets all sell many different products from various manufacturers.Therefore, a retail store that sells a single product from a particular manufacturer is best described as a tied shop.Answer:A. tied shop