What option must be selected to include updated records in email alerts?

Selecting the option to "Enable the 'Send on Update'" is essential for ensuring that email alerts are triggered when records are modified. When this setting is activated, the system monitors changes made to the specified records and automatically sends notifications to users when updates occur. This is particularly useful for keeping stakeholders informed about the latest developments without requiring them to manually check for changes.

The other choices do not directly influence the inclusion of updated records in email alerts. Setting alerts to a weekly frequency may limit updates to a schedule rather than responding to changes in real-time. Attaching results as a PDF pertains to the format of the information being shared rather than the triggering of alerts based on updates. Sharing with external users relates to the accessibility of records and alerts for users outside the organization but does not address the mechanism for generating alerts tied to record updates.