According to the AgentForce Data Library and Retrieval Configuration Guide, when organizations have external PDF or text documents that need to be used by an AI agent, the recommended clicks-only approach is to upload the documents as a File Source in the AgentForce Data Library. The system automatically processes the uploaded files, chunks their content, builds a Search Index, and allows you to create a retriever to ground agent responses from those indexed documents.

This method requires no code or manual integration and ensures that all document content becomes queryable through retrieval-augmented generation (RAG).

Option A is incorrect because LLMs cannot reliably access external links; they require indexed data. Option C, involving Data Cloud ingestion, is a more advanced, developer-level approach—not a clicks-only setup.

Hence, the correct implementation is Option B – Upload PDFs as File Source in the AgentForce Data Library and create a retriever for grounding.