How can Northern Trail Outfitters be notified if the All Audiences data extension is transferred with zero subscribers?

The choice that states to use the Verification Activity following the Import to Send Email Notification is the most suitable approach for ensuring that Northern Trail Outfitters is notified if the All Audiences data extension is transferred with zero subscribers. The Verification Activity in Salesforce Marketing Cloud provides a mechanism to verify data and conditions after an import has occurred. By setting it up to check the subscriber count, it can automatically trigger an email notification if the count falls to zero, allowing the team to respond quickly to any issues.

Employing this method ensures that real-time insights into the automation process are available, helping maintain data integrity and notify relevant stakeholders as needed. This proactive approach to verification ensures the organization maintains engagement strategies effectively.

The other options, while potentially useful in different contexts, do not specifically address the requirement to receive notification based on the absence of subscribers in the data extension. For instance, using a Send Email activity after import does not conditionally check for subscriber count before sending; it simply sends an email. Stopping the automation by using the Verification Activity may prevent further processing but would not provide a notification. Lastly, utilizing notification settings for Runtime Errors is limited to handling errors during execution rather than specifically monitoring subscriber counts in the data extension.