Identify common supplements used by athletes and how coaches should address safety and evidence.

• A. Creatine, caffeine, protein supplements; assess safety, avoid prohibited substances, ensure evidence-based use, and consult medical staff; follow governing body rules
• B. Supplements are always prohibited
• C. Supplements guarantee performance; take whatever is marketed
• D. Only use supplements if prescribed by a doctor

Answer: (A)

Athletes often use creatine, caffeine, and protein supplements, so coaches must address both safety and what the evidence says about these products. The best approach is to assess safety for each supplement, avoid anything that contains prohibited substances, use products that have credible, evidence-based support for their benefits, and involve medical staff to review health risks and appropriate dosing. It also matters to follow the governing body’s rules and anti-doping regulations to keep athletes compliant. This combination—recognizing common supplements, prioritizing safety, grounding use in solid evidence, and aligning with official rules—explains why this option is the strongest. The other statements are too absolutist or inaccurate: some supplements are not prohibited, there is no universal guarantee of performance from supplements, and relying only on prescription limits safe, evidence-based use in ways coaches need to guide everyday training.