[Solved] Given this LangGraph snippet, what will be the output if the human approves the AI result?flow.add_node(AINode(name='generate')) flow.add_node(HumanNode(name='approve')) flow.... | LangChain

LangChain - LangGraph for Stateful Agents

Given this LangGraph snippet, what will be the output if the human approves the AI result?

flow.add_node(AINode(name='generate'))
flow.add_node(HumanNode(name='approve'))
flow.add_edge('generate', 'approve')
result = flow.run()

AThe flow runs without pause and returns AI output directly

BThe flow throws an error due to missing edge

CThe flow pauses for human approval and returns approved result

DThe flow skips HumanNode and returns None

Step-by-Step Solution

Solution:

Step 1: Analyze flow structure
AI node generates output, then HumanNode waits for approval.
Step 2: Understand HumanNode behavior
HumanNode pauses flow until human input is received, then continues.
Final Answer:
The flow pauses for human approval and returns approved result -> Option C
Quick Check:
HumanNode pauses flow = approved result returned [OK]

Quick Trick: HumanNode pauses flow until human input is given [OK]

Common Mistakes:

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Given this LangGraph snippet, what will be the output if the human approves the AI result?