the correct answer is (D) was;come 
I HOPE THIS HELPS:)
        
             
        
        
        
An expository article is usually about explaining something or talking about it. So if it's a true story and you write it like a life story then yes it can be. If it's just a fictional story you want to write then no.
        
                    
             
        
        
        
I'm sorry but you got to give me specific detail.