The most precise sentence is option D: 'To achieve at the highest levels, an athlete must practice, listen, and be in good health.' This option is clear and direct, effectively summarizing the essential actions required for an athlete's success. It conveys the necessary information without unnecessary complexity or vagueness.
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The sentence that contains the most precise language is option d) because it clearly states the essential actions an athlete must take to succeed, while remaining concise. Other options either lack detail or are wordy in comparison. Therefore, option d) is the best choice for conveying precise meaning. ;