In the lungs, oxygen is put into the blood and carbon dioxide is taken out of the blood during the process of breathing. After the blood gets oxygen in the lungs, it is called oxygen-rich blood.
"physically fit" doesn't involve your mental/ emotional health, it normally involves using your arms, legs and brain, which in short your brain involves those of number 2
I’m pretty sure the answer is b
Yogurt
yogurt contains mostly carbs.
