Answer:
preventing viruses from replicating
Explanation:
 
        
             
        
        
        
Hey there
the answer is 
A.the ability of your heart and lungs to work during prolonged exercise
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SAVAGELEGEND72
 
        
                    
             
        
        
        
It doesn't show the choices but, Biostimulation<span> involves the modification of the environment to stimulate existing bacteria capable of bioremediation. </span>
        
                    
             
        
        
        
Backup of sewage in the preparation area or a serious pest infestation are hazards or contaminants that are grounds for immediate closure of an operation. A sewer drain backup may be among the most unpleasant experiences one can get as a house owner.