[guаc] In оrder tо increаse sаles оf their chips and guac, the brand Rockin’ Guac wants to find a creative way to get customers to eat the combo more frequently. Rockin’ Guac’s plan is to promote the purchase of chips and guac simultaneously by packaging the dip-size tubs of guacamole into a special cardboard box. Once opened, this box becomes a tray with the guac on one side as a dip, and an empty side right next to it for chips. The company is confident that creating this cardboard bowl for chips will increase sales of both products, as this creates an easy way to set up the snack at parties. Which function of packaging best describes the role of the cardboard tray?