Answer:
The best answer I can see? Probably letter D. It has a fact and some supporting evidence.
 
        
                    
             
        
        
        
Banal would be a. overused
        
                    
             
        
        
        
Answer:
It affected the plot because
 (hospitality rules) Bellerophon had been a guest for 9 days before the king read the letter that ordered him to kill Bellerophon.