The answer would be A) TRUE because that's what the word means, flex is used to move muscles and move around and bility is short for ability where its our capability to move in motion.
The term for when a player stops a soccer ball with their foot is trapping.
Pretty sure it could be head circles because your neck is really delicate and if something happens, you could get seriously hurt or disabled from moving. (Sorry if I’m wrong, I’m no doctor)
Emphysema, Lung Cancer, Cystic Fibrosis, etc.