You’re evaluating the RAG pipeline by comparing its responses to synthetic questions.

The selected option specifically B states “Aggregation reduces the complexity of the evaluation process and allows for a more overall assessment of the pipeline’s effectiveness.”, which matches the operational requirement rather than a superficial wording match. For this scenario, Option B is defensible because it exposes the control plane that a senior engineer can test, scale, and harden. The high-value engineering move is closed-loop evaluation where benchmark results, user feedback, and parameter changes are versioned together. Aggregated similarity reduces a large score set into a comparable health metric. It does not replace qualitative inspection, but it makes regression tracking practical. That is why the other options are traps: looking only at speed can reward broken behavior, while looking only at accuracy can ignore cost and reliability failures. Within the NVIDIA stack, NVIDIA evaluation tooling emphasizes whole-agent behavior, including tool selection order, final outcome quality, throughput, latency, and traceability. Anything less would make the agent fragile when traffic, schemas, policies, or user behavior shift.