The play between a serve and a point
        
             
        
        
        
Answer:
C medical quack is the answer. 
Explanation:
 
        
                    
             
        
        
        
Your answer would need to be c
        
                    
             
        
        
        
Anything in the mouth, really. Gingivitis, for example. By brushing your teeth regularly (in the mornings, after lunch, dinner, at night etc.) you can prevent this i.e Good Hygiene. A common prescription medication would be <span>Erythromycin or Penicillin. 
Hope this helps!</span>