Design a short evidence-based recommendation for a public-health program in a temperate region where local soils are low in selenium but the commercial food supply imports produce from selenium-replete regions. Your recommendation should state whether population-wide selenium supplementation is justified and why.

• A. Do not recommend population-wide selenium supplements because a diversified commercial food supply usually provides adequate selenium from imported foods; instead monitor at-risk subpopulations relying exclusively on local subsistence crops and consider targeted interventions for them to avoid risks of selenosis from unnecessary supplementation.
• B. Advise removal of selenium from the food supply entirely because any intake poses a cancer risk and chronic toxicity is common even at typical dietary levels in imported foods.
• C. Recommend replacing all imported food sources with locally grown crops and then fortifying local soils with high industrial selenium waste without any monitoring, since industrial selenium is an equivalent nutritional source and poses no public-health concerns.
• D. Recommend immediate population-wide high-dose selenium supplementation to all residents to preempt any risk of deficiency from local soils, because supplements are inexpensive and have negligible toxicity at high doses.

Answer: (A)