It depends on what the problem is
        
                    
             
        
        
        
Tim is a clever, hardworking, and introspective boy. He takes quiet, intelligent paths through trying situations, as opposed to his father and brother, who share a boldness and impetuousness.
        
             
        
        
        
Presentation aids are visual methods of clarifying ideas and illustrating the message. So, your answer would be A. 
Hope this helps!
 
        
                    
             
        
        
        
Since the flames of the gas chambers and the flames of the battle extinguished his true belief in god, he is saying that he will never forget. He will never forget the pain and suffering and his lost loved ones and all the pain he survived through.