A region with high dental caries and historically mild iodine deficiency is designing policy. Which integrated strategy best synthesizes prevention of both issues while minimizing risks?

• A. Add both extremely high fluoride and extremely high iodine to municipal supplies to ensure everyone gets maximum benefit, then manage any resulting toxicities via outpatient clinics.
• B. Discourage any population-level interventions and rely exclusively on individual dental visits and dietary counseling since community measures always produce more harm than benefit.
• C. Implement community water fluoridation at recommended concentrations and maintain voluntary iodized salt distribution, combined with surveillance for fluorosis and monitoring iodine status, plus targeted iodine supplementation for pregnant women.
• D. Prioritize mandatory iodized salt at very high iodine concentrations to eliminate all thyroid issues and delay water fluoridation indefinitely because fluoridation has no role in caries prevention.

Answer: (C)