Answer: I believe it is 4
Explanation:
 
        
                    
             
        
        
        
Answer:  The cancer of the skin metastasizes into the lymph joints (spreads), and they run everywhere in the body, dropping bad cells when they go. the lungs are super vascular (carry a lot of blood flow), and so is the organ. Therefore, they are favorite places for the cancer cells to end up and grow.
Explanation:  hoped this helped:)) you can just search it up
 
        
                    
             
        
        
        
C. the answer is c. i just took this test on keystone (i think this is keystone question. right?0
        
             
        
        
        
The answer is D its tightly packed cells allow for proctection  against harmful substances.
        
                    
             
        
        
        
 Controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities.