Which of the following is a viral infection that most adults contract 2 to 4 times a year? A.
bacterial pneumonia
B.
strep throat
C.
influenza
D.
the common cold

D . common cold but also the 2nd most choice would be strep throat as well

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.