In a Tall Strawberry Acai Refresher, what is added to the bottom line?

In a Tall Strawberry Acai Refresher, the addition at the bottom line refers to the specific ingredient that provides the key flavor profile of the drink. Strawberry acai juice is the foundational element that defines this beverage, contributing its signature fruity and vibrant taste. It creates a refreshing base, essential for achieving the drink's intended flavor.

While water and ice are typically used in various drink preparations, they do not serve as distinguishing ingredients but rather as components that affect texture and temperature. Similarly, while a scoop of strawberries can be added for garnish or additional flavor, it does not constitute the primary flavor base of the refresher. This distinction highlights why strawberry acai juice is the correct answer, as it is integral to the overall experience of the drink.