The AgentForce for Service Implementation Guide confirms that when automating customer service and complaint resolution, the correct solution is a Service Agent. The documentation states:

“Service Agents handle customer inquiries, complaints, and issue resolution workflows. They can automate actions such as offering credits, applying upgrades, and escalating severe cases to human support.”

Flex prompt templates are recommended for these scenarios, as they allow contextual control and personalization based on the complaint details.

Option A (Sales Agent) focuses on sales-related tasks like lead nurturing.

Option B (Custom Agent) could work but lacks the pre-built integrations and actions designed for service workflows.

Thus, Option C aligns with Salesforce’s best-practice model for customer issue automation.

References (AgentForce Documents / Study Guide):

AgentForce for Service Guide: “Automating Complaint Resolution”

AgentForce Prompt Template Handbook: “Using Flex Templates in Service Workflows”

AgentForce Study Guide: “Deploying Service Agents for Escalation and Resolution Scenarios”