A quiet mind can help achieve focus. Some music can help in a quiet mind.is the reasoning for what question and answer pair?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Q: John listened to music when he needed to focus. It helped him achieve what?
Options:
- express emotion
- beautifull
- irritate
- bad environment
- quiet mind
A: quiet mind