What Org Wide Admin setting allows users to view existing author labels and add new ones?

The choice that allows users to view existing author labels and add new ones is the one related to "Labels." This setting is specifically designed to manage how author labels are organized and utilized within the system. Labels serve as metadata to classify and identify authors based on specific criteria or attributes, making it easier for users to filter and analyze data in their interactions with various social channels.

When users have access to this setting, they can not only see the labels that are already established but also create new labels as needed to reflect any changes in their social media strategy or to enhance their reporting and analytics. This flexibility is crucial for maintaining an up-to-date and relevant categorization system that aligns with the organization's objectives.

In contrast, the other options serve different purposes. "Users" typically pertain to the management of user accounts and permissions, "Topic Profiles" are used for monitoring discussions on particular subjects, and "Sentiment Model" relates to assessing the emotional tone of social media interactions. These functionalities do not provide the capabilities to specifically manage author labels in the way described.