From 6 years to 16 years, which fluoride supplementation option is listed?

• A. <0.3 ppm at 1.0 mg/day
• B. 0.3-0.6 ppm at 0.50 mg/day
• C. <0.3 ppm at 0.25 mg/day
• D. 0.3-0.6 ppm at 1.0 mg/day

Answer: (A)

For school-age children, fluoride supplementation depends on how much fluoride is in drinking water. When the water's fluoride is less than 0.3 ppm, the recommended supplement dose for ages 6 to 16 is 1.0 mg per day. If the water fluoride is between 0.3 and 0.6 ppm, the dose is 0.5 mg/day, and if the water fluoride is above 0.6 ppm, no supplement is needed. The option with less than 0.3 ppm and a 1.0 mg/day dose matches this guideline, making it the appropriate choice for ages 6–16.