A Copilot-created draft pull request failed review. The reviewer needs to classify the root cause accurately before tuning the agent prompt, modifying tool permissions, or changing the setup workflow. Which four actions should you perform in order? 1. Compare the final diff against the acceptance criteria 2. Change the custom agent prompt to be stricter 3. Review session logs for tools used and errors 4. Check setup and workflow logs for environment failures 5. Classify the failure before selecting a remediation 6. Enable all MCP tools and rerun immediately

The correct sequence prioritizes investigation before remediation. First, review session logs (3) to understand what tools the agent used and if any errors occurred during its execution. This helps pinpoint agent-specific issues. Next, check setup and workflow logs (4) to identify any environmental failures or misconfigurations that might have affected the agent's ability to perform its tasks. After confirming the agent and environment functioned as expected, compare the final diff against the acceptance criteria (1) to determine if the generated code simply didn't meet the requirements, indicating a prompt or understanding issue. Finally, classify the failure (5) based on the gathered evidence, which then informs the appropriate remediation strategy (e.g., tuning the prompt, adjusting tool permissions, or fixing the environment). The incorrect options either jump to remediation too quickly (2, 6) or misorder the diagnostic steps.