So the Spaulding Classification is a system for matching the disinfection and sterilization of surfaces. This is usually used with medical or surgical devices.
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
B or D, although I'm not sure which
Discrete
It is not continuous because free throws are separate events.