How should the pumps be used when one sweet flavor and one unsweetened flavor are mixed?

Using full amounts of pumps for both the sweet flavor and the unsweetened flavor is the correct approach when mixing flavors. This ensures that the intended balance of the drink is achieved, allowing the sweetness from the flavored syrup to complement the unsweetened flavor effectively.

In practice, utilizing the full amount for both types of flavored syrups enhances the complexity and depth of the beverage without overshadowing one flavor over the other. This method allows for the full experience of each flavor profile, providing customers with a well-rounded taste.

The other options do not adequately address the need for a balanced mix between the two flavors. Using only half the amount for the sweet flavor might lead to an underwhelming sweetness, while not using any pumps for the unsweetened flavor could result in a drink that lacks necessary flavor depth or complexity. Using only one pump for the sweet flavor would likely lead to a similar issue, failing to provide the desired sweetness in relation to the other flavor. Hence, the most effective method is to utilize the full pump amounts for both syrups.