What tricks do Supermarkets use to get you to buy things?

Where does all the food in the Supermarket come from? Why are fruits & veggies always the first thing you see in a Supermarket? Where does all the unsold food go? For free home activities sign-up at www.WhoSmarted.com See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info .