Answer:
The symbol in the story contributes most to the theme is Mangan's sister because she represents domesticity and routine to the narrator. I hope my answer has come to your help.
Explanation:How does the symbolism express the theme of “Araby”? ... In "Araby," Joyce employs much religious symbolism to bring one of his major themes to fruition: the incongruity of the secular and the sacred. 
 
        
             
        
        
        
you basically have to explain the wheres, whos, and what happens in each chapter of the story
 
        
             
        
        
        
I think Nick’s narration make us feel that Gastby is an unreliable character