Big​ food, drug, and discount​ retailers, such as​ safeway, walgreens, and​ target, buy various types of candy bars by the truckload and stock it on their​ stores' shelves. in​ turn, you can buy a single snickers bar along with a shopping cart full of other items when you visit the store. this example demonstrates how channel intermediaries contribute value by performing the​ ________ function.