Characters who do not change during the course of a story are static. These changes include character, personality, or perspective.
In contrast, a dynamic character undergoes a major transformation in regards to their character, personality, or perspective. 
 
        
                    
             
        
        
        
Answer:
topic sentences state the main idea.
 
        
             
        
        
        
I think it's A. an argument.
That's just an argument, it could be about anything. The others are formal types of debate.