The answer is: C) require surgical masks to be worn by both patients and hospital staff.
A. Self-monitoring
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It means they are healthy if they nose it's wet it means he/she is sick
Renin. Renin is a hormone that is produced by the kidneys and it acts to elevate the blood pressure. ... Angiotensin II causes blood vessels to constrict, which raises the blood pressure. It also causes the kidneys to retain more sodium and water, which raises the volume of the blood