Answer: Source Attribution in Knowledge Bases

**Explanation:** Source Attribution in Knowledge Bases is the correct feature that enables AI answers to cite the exact document used as a source. This feature is particularly important for legal teams and other compliance-focused organizations that require traceability and verifiability of information sources. **Why other options are incorrect:** - **A) Guardrails for Bedrock**: This feature focuses on content safety, filtering inappropriate content, and implementing safety controls, not specifically on source attribution. - **C) Model Evaluation**: This involves assessing model performance, accuracy, and metrics, not source citation capabilities. - **D) Reinforcement Learning**: This is a machine learning training methodology where models learn through trial and error with rewards, unrelated to source attribution. **Key Benefits of Source Attribution:** 1. **Transparency**: Shows exactly which documents were used to generate answers 2. **Verifiability**: Allows users to check the original source material 3. **Compliance**: Meets legal and regulatory requirements for source documentation 4. **Trust**: Builds confidence in AI-generated responses by providing traceability This feature is essential for applications where audit trails, compliance, and source verification are critical requirements.

Author: Ritesh Yadav