The correct answer is A because the observed failure is caused by ambiguous subagent matching, not by missing content or insufficient agent count. In Agentforce, subagent classification depends heavily on the subagent’s name, classification description, scope, instructions, and actions. If two subagents semantically overlap, the reasoning engine can route the same user intent to the wrong place. Refining the competing classification descriptions and narrowing scope removes ambiguity and improves deterministic routing. Option B can make the architecture worse by adding more subagents before fixing the overlap. Option C is wrong because knowledge articles help answer questions after routing; they do not solve subagent selection errors. Salesforce troubleshooting guidance specifically recommends checking the subagent name and classification description when expected utterances are misclassified.