The system defined content of surveys is already localized for you, such as the system questions and categories included in the question library. However, you need to localize the user-definable (that is, client-configurable) values in the Key Segments tab of Engagement Setup > Results Setup.
The following section describes how to localize these elements in more detail:
Important: If a value is defined but not localized, it will appear as it was entered for all survey participants, including those using a different culture setting. As such, it is best practice to localize all of the values that you define.