<span>1. Outpatient Drug Treatment.
2. Herbal Medicines.
3. Muscular Endurance.
4. Regularity.
5. Respiratory and Circulatory. (this is the only one I'm not sure of.)
6. The First Time.
7. Physical Activity.</span>
I think the answer is A because of the temperature change on the area
Four. The human heart has four valves.
