Which setting must be enabled to prevent survey access via an anonymous link?

To prevent survey access via an anonymous link, enabling identification requirements is key. When the identification requirement is activated, respondents are prompted to provide identifiable information such as an email address or login credentials before they can access the survey. This transforms the survey from being anonymously accessible to a controlled environment where only identified individuals can participate.

This option ensures that anyone accessing the survey is verified, which inherently eliminates the possibility of accessing the survey through an anonymous link. As a result, only those who have been invited or who have been granted specific access can complete the survey, thereby maintaining the integrity of the data collected and ensuring that responses can be tracked.

The remaining options do not specifically address the need to control access through anonymity. Quotas pertain to limiting the number of responses from specific groups but do not prevent anonymous access. Access control refers to broader permissions within the survey platform, and response limit sets the maximum number of responses but does not impact how respondents enter the survey. Thus, enabling identification is crucial for managing access effectively.