Questions 22 – 24. Choose a, b, or c as the best answer. 22. Consuming a healthy diet is most important for athletes because they have:

Question

Questions 22 – 24. Choose a, b, or c as the best answer. 22. Consuming a healthy diet is most important for athletes because they have:

BlackTom AI · Accepted Answer

Athletes typically have much higher daily energy expenditure than sedentary people, so answer b is correct.

1) Relevant knowledge points and concepts
- Energy balance: energy intake (food) must meet energy expenditure (basal metabolic rate + exercise) to maintain weight and performance.
- Macronutrient roles: carbohydrates refill muscle glycogen; protein repairs and builds tissue; fats provide concentrated energy.
- Micronutrients and fluids: vitamins, minerals and hydration support metabolism, recovery and immune function.

2) Step‑by‑step reasoning
- Athletes perform more intense and/or longer-duration activity, which raises total daily energy needs. For example, a resting energy requirement (BMR) of ~1500 kcal plus several hours of training (e.g., 1000–3000 kcal depending on sport) can push needs to 2500–4500+ kcal/day.
- A healthy diet supplies the extra calories and the right distribution of carbs, protein and fats so athletes can train, compete and recover without losing muscle mass or performance.
- Without adequate energy intake, athletes risk fatigue, impaired performance, loss of lean mass, and increased injury/illness risk.

3) Calculations / intermediate step illustration
- If BMR ≈ 1500 kcal and training burns 2000 kcal, total need ≈ 3500 kcal/day. A healthy diet must provide that energy plus nutrients for glycogen restoration and tissue repair.

4) Why the correct answer is correct
- Option b (“very high energy needs”) directly states the core reason diet is most important: athletes require substantially more energy and nutrient support than non‑athletes to sustain performance and recovery.

5) Why other options are incorrect
- a. “heavy training programmes” describes one aspect of athletes’ lives but is not the direct nutritional reason; heavy training causes the high energy needs, so it’s secondary.
- c. “long recovery times” is generally false — proper nutrition shortens recovery. Athletes usually require efficient recovery, not longer recovery.

6) Conclusion
Because athletes must meet substantially higher daily energy and nutrient demands to fuel performance and recovery, option b. very high energy needs is the correct answer.

Questions 22 – 24. Choose a, b, or c as the best answer. 22. Consuming a healthy diet is most important for athletes because they have:单项选择题

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