Answer:
A. Hemodialysis
Explanation:
Hemodialysis is the method or process of using a dialysis machine (a special machine) to clean the blood. 
This is done by doing a minor surgery on the patient to get the blood into the dialyzer.
This dialysis machine does the work a healthy kidney would do.
 
        
             
        
        
        
Answer:
a,the ability to go from a single cell to multicellular organism
 
        
             
        
        
        
 When salt and sugar dissolve in water it is a physical change. The chemical makeup of the salt and sugar are not changed.
Physical change
 
        
                    
             
        
        
        
The answer is RNA polymerase binds to a promoter region of DNA.