Which tool would Northern Trail Outfitters use to send out their password reset emails immediately when subscribers submit the "Forgot Password" form?

The most suitable tool for Northern Trail Outfitters to send out password reset emails immediately upon receiving a request from subscribers is the Triggered Send feature. Triggered Sends are designed to automatically send emails in response to specific actions taken by subscribers, such as submitting a "Forgot Password" form.

When a subscriber initiates a password reset, the Triggered Send can be set up to respond instantly to that action, ensuring that the email is sent without any manual intervention. This immediate response is crucial for user experience, as it allows subscribers to quickly regain access to their accounts.

The other options may not provide the same level of immediacy or direct connection to subscriber actions. For instance, Distributed Marketing Quick Send generally involves sending emails to a group of subscribers based on predefined lists, while Journey Builder Quick Send is about sending messages within a planned customer journey. The Forgot Password Trigger, while it sounds relevant, is not a recognized functionality in the context of the scenario, as in email marketing, Triggered Sends specifically handle actions like password resets.