What type of distribution link should be used for unique response tracking?

The use of a personal link is essential for unique response tracking because this type of link is specifically generated for individual respondents. Each participant receives their own distinct URL, which allows the system to associate their responses with their identity. This ensures that each response can be accurately tracked back to the specific respondent, enabling the collection of personalized data and detailed analysis of individual behavior and responses.

In contrast, an anonymous link does not allow for individual identification; any responses collected would remain unlinked to any specific respondent, making it unsuitable for tracking unique responses. A public link is accessible to anyone and could lead to multiple respondents using the same link, thus complicating tracking efforts. An engagement link typically pertains to sophisticated analytics, often used for campaigns but not specifically designated for unique individual tracking like a personal link is. These nuances highlight the importance of selecting a personal link for unique response tracking to ensure data integrity and respondent privacy.