Data-driven alerts in Tableau Server allow users to receive notifications when data in a view meets certain conditions (e.g., a sales metric exceeds a threshold). By default, this feature is disabled for a site unless explicitly enabled by an administrator.

Option C (Change the data-driven alerts setting on the new site's Settings page): This is the correct answer. In the Tableau Server web interface, a site administrator can navigate to the site’s Settings > General page and enable the option "Let users create data-driven alerts." This must be done manually because the default setting for a new site is disabled. Once enabled, users with appropriate permissions (e.g., Viewer, Explorer, or Creator roles) can create alerts on views they have access to.

Option A (Enable data-driven alerts on the TSM Configuration page): This is incorrect because the TSM Configuration page (accessed via the TSM web UI or CLI) manages server-wide settings like ports, authentication, and processes, not site-specific features like data-driven alerts.

Option B (Run the tsm configuration set -k dataAlerts.checkIntervalInMinutes -v 60 command): This is incorrect. The dataAlerts.checkIntervalInMinutes key controls how frequently Tableau Server checks alert conditions (default is 60 minutes), but it does not enable the feature itself. The feature must first be turned on at the site level.

Option D (No action is necessary): This is incorrect because the default setting for data-driven alerts is off for new sites, requiring explicit action to enable it.