Answer: Using figurative speeches and maintaning curiousity of readers.
 
        
             
        
        
        
Repeating a sequence of words at the beginning of a phrase is called 'Anaphora' in rhetoric. It is used in speeches to give emphasis to the point being discussed. Thus, the speaker wanted to emphasize his point and encourage his listeners to do something as well. 
        
             
        
        
        
I think it is A:  It makes clear to the reader that the narrator is making an ironic statement.
        
                    
             
        
        
        
Examples (both in chapter 1): Infinitely small sound and dry rain