Answer:
Pretty sure it's A because people can redo this test as many times as needed to verify the answer. 
 
        
                    
             
        
        
        
Answer: The virus weakens as time passes.
Explanation:  The virus will weaken continuously during transmission, and  will reduce its toxicity after several generations of transmission, without causing much harm to the human body. 
 
        
             
        
        
        
The organelles that perform roles equivalent to circulatory are ribosomes,endoplasmic reticulum,and the golgi body
        
             
        
        
        
Usually blood transports nutrients
        
             
        
        
        
Answer
           The common name of Lucy is Southern ape, while their scientific genus name is <em>Australopithecus afarensis</em>.