For this scenario, Option C is defensible because it exposes the control plane that a senior engineer can test, scale, and harden. The selected option specifically C states "Implementing retry logic for error handling and integrating user feedback loops for iterative improvement", which matches the operational requirement rather than a superficial wording match. Real systems fail at the boundaries: API outages, bad payloads, and unmodeled user feedback. Retry logic plus feedback loops closes that boundary. Operationally, the design depends on a plugin-style execution layer that keeps external systems outside the model while still letting the agent invoke them deterministically. Within the NVIDIA stack, a production NVIDIA deployment can put tool latency, errors, and schema validation into traces, then tune the workflow without changing the foundation model. The losing choices mostly optimize for short-term convenience; static or unvalidated integration choices cannot withstand transient outages, rate limits, malformed responses, or schema drift. It also creates clean evidence for audits, incident review, and root-cause analysis when behavior drifts.