Bis the correct answer — in UiPath's Agent Builder (Studio Web),descriptions for input and output arguments serve as grounding contextfor the agent. These descriptions help the LLMunderstand what each argument represents, how it should be used in the generation process, and how to structure its outputs.

This is especially critical for:

Inputs like {{CUSTOMER_ISSUE}} — the agent needs to know it’s a complaint, question, or error

Outputs like {{TROUBLESHOOTING_STEPS}} — the agent should format these as steps, not just a summary

These descriptions:

Improve theaccuracy of prompt generation

Ensure the agentreturns structured, expected data

Help guide LLM behavior in multi-step or dynamic workflows

Option A is incorrect — Orchestrator triggers donot auto-mapbased on descriptions.

C is false — descriptions donot make arguments mandatory.

D is incorrect —output arguments benefit greatly from descriptions, especially for guiding LLMs on return format and content.