Question

______ helps build the strong bones that athletes depend on, and iron carries oxygen to muscles.

Calcium

Vitamin C

Carbohydrates

Iron

Answer 1

iron. It transports oxygen in red blood cells to other cells, including muscles. But fortified cereals may already supply a day’s worth, so check before adding more. Other sources include whole grains, vegetables and beans.

Step-by-step explanation:

Answer 2

The answer is calcium

Pstt , remember it with milk , milk contains calcium and so it's white , Bones are also white !
That's why we drink milk for stronger bones ;)