* Flow Builder: * Flow Builder can evaluate record criteria using a Decision element and then send an outbound message using the "Action" element. * Allows automation without Apex. * Approval Process: * Approval Processes can evaluate criteria and trigger outbound messages as one of the associated actions. * Why Not Other Options? * C. Entitlement Process: Focuses on managing entitlements, not triggering outbound messages. * D. Next Best Action: Used for recommendations and guided actions, not for triggering outbound messages. References:Flow Builder Documentation:https://help.salesforce.com/s/articleView?id=flow_overview.htm Approval Process Documentation:https://help.salesforce.com/s/articleView?id=approval_defining.htm