Answer:
Number 3
Explanation:
Number 3 or C is correct, "action of white blood cells when certain bacteria enter the body." This is the correct answer because white blood cells are in your body to fight off infections. some peoples immune system see these bacteria on the peanut, egg, or milk as an enemy so it tries to fight against it even though it is harmless to the body. 
 
        
             
        
        
        
Answer:
Cloud condensation nuclei or CCNs are small particles typically 0.2 µm, or 1/100 the size of a cloud droplet on which water vapor condenses. Water requires a non-gaseous surface to make the transition from a vapour to a liquid; this process is called condensation.
MAYBE I THINK ;)
 
        
                    
             
        
        
        
Answer:
your answer is Choice C they would have 50% having the DMD. It is 100% correct I am taking biology classes and it is correct. And I also looked it up it is 50% I promise you there's no doubt 100%