Final answer:
Vitamin C is not a concern for vegan children as it's plentiful in fruits and vegetables; however, vegans must be mindful of their intake of Protein, Vitamin B12, and Iron.
Step-by-step explanation:
The nutrient that is generally NOT a concern for vegan children is Vitamin C. This is because Vitamin C is abundantly available in a vegan diet through fruits and vegetables such as oranges, strawberries, kiwi, bell peppers, and broccoli. On the other hand, nutrients like Protein, Vitamin B12, and Iron can sometimes be areas of concern in a vegan diet since they are commonly found in animal products.
Vegans need to ensure they consume a variety of plant-based sources to meet protein requirements, use B12 fortified foods or supplements, and include rich plant-based iron sources like lentils and spinach, often along with Vitamin C to enhance absorption.