A company needs to ensure customers always receive answers based on the most current version...

The correct answer is B because Salesforce Knowledge is the correct source when the business requirement depends on governed support documentation, publishing state, and current article versions. A knowledge-based Agentforce Data Library uses Knowledge as the managed content source, allowing the agent to ground responses in approved Knowledge content instead of static uploaded files. Option A is wrong because a file-based library does not provide the same native Knowledge publishing and version governance; uploaded documents can become stale unless actively maintained. Option C is wrong because the two library types are not equivalent for content lifecycle management. Salesforce guidance for Knowledge-based libraries and service grounding emphasizes using published Knowledge content and data category or library configuration to control what the agent can search and use.