To plot memorial events or experiences to explain and or give the reader a descriptive vision of what the picture author is painting
        
                    
             
        
        
        
I would say that the pair of lines from the passage that contains a change in intonation is the first one:
But all the time / I'se been a-climbin' on
Because it shows a change in the tone of a poem.
        
             
        
        
        
I think it is B2B businesses