Answer:
Calcium
Explanation:
Calcium is essential to young children because it directly related to growth and bone density
Prevents bacteria from entering the blood
Not sure but probably cognitive it fits the best
BMI is a person's weight in kilograms divided by the square of height in meters.
In general, BMI is an inexpensive and easy-to-perform method of screening for weight category, for example underweight, normal or healthy weight, overweight, and obesity.
Answer: D
