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A
Take a side and argue with one of them
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B
Stay calm and neutral, politely restore order (for example, by clarifying the line or asking them to take turns), and serve customers fairly
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C
Close your window and walk away
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D
Let them fight it out while you wait
Why this is the answer
Maintaining a calm, orderly retail environment is part of the role. When customers dispute their place in line, the best action is to stay calm and neutral, politely restore order — clarifying the queue or asking them to take turns — and continue serving customers fairly. Taking sides inflames the conflict, while abandoning your station or passively letting them argue fails everyone waiting. The exam rewards composure, fairness, and the ability to defuse tension between customers. A neutral, professional approach that keeps the line moving fairly is the strongest choice.
Source: USPS 477 VEA — Customer Disputes