How much ice is used to fill every fountain drink?

The correct choice indicates that 1/2 cup of ice is typically used to fill every fountain drink. This measurement strikes a balance between maintaining the desired level of coldness without overwhelming the beverage, which is essential for customer satisfaction. When a fountain drink is served, having about 1/2 cup of ice ensures that the drink remains chilled and maintains its carbonation longer, while still allowing for a substantial amount of liquid to be served.

Using too little ice may result in a drink that warms up quickly, while too much ice could dilute the drink's flavor and limit the actual volume of the beverage. Thus, 1/2 cup serves as a practical standard across many beverage-serving practices, ensuring both quality and a pleasant drinking experience.