Concept:A tied shop is a retail outlet that is contractually bound to sell the products of only one manufacturer.Explanation:The store is described as selling a single product from a particular manufacturer.This matches the definition of a tied shop because such a store restricts its sales to one manufacturer's goods.Shopping malls, hypermarkets, and chain stores usually stock products from many different manufacturers.Therefore, the correct type of retail store is a tied shop.Answer:A. tied shop