Sales Managers want to be automatically notified any time there is a change to an...

The correct answers are A. Enable Feed Tracking on Opportunities and D. Use a record-triggered flow on Opportunity and a Chatter post action.

Feed Tracking is the correct configuration to track field changes on the Opportunity record feed. Salesforce states that feed tracking detects changes to tracked record fields and posts updates to the feed for users who follow the record. Salesforce also allows admins to enable feed tracking for an object and select tracked fields.

A record-triggered flow with a Chatter post action handles the automatic notification requirement. The flow can detect when the Opportunity Close Date changes and post to Chatter, such as mentioning the sales manager or a manager group. Salesforce supports posting to a record’s Chatter feed through automation when feed tracking is enabled.

B is incorrect because an outbound message sends data to an external endpoint, not a manager notification on the Opportunity. C is incorrect because Historical Trending is mainly for reporting on changes over time, not automatic manager notification on the record.