Answer:
the incubation, prodromal, illness, decline, and convalescence periods 
 
        
             
        
        
        
Preferably about 30 minutes a day
        
                    
             
        
        
        
Stress management 
 hope this helps 
        
             
        
        
        
Answer:
a
Explanation:
The server should be behind the serving line before serving, once the server serves, they can enter the court