Final answer:
To prevent lead absorption in children, adequate dietary intake of iron, calcium, and vitamin C is needed.
Step-by-step explanation:
Children should receive adequate amounts of nutrients in their diets to prevent lead absorption from their environment. To specifically prevent this, children need to have enough iron, calcium, and vitamin C in their diets. Iron can inhibit the absorption of lead or help protect the body from the damaging effects of it. Calcium is essential for bone health and its absorption from the diet requires vitamin D. Increasing vitamin C intake can also reduce lead absorption. All three of these nutrients play a crucial role in mitigating lead absorption and guarding against lead poisoning.