I believe the correct answer is to help the reader visualize a view where water and sky are difficult to tell apart.
The author is trying to portray an image where the water and the sky are somehow blending into each other - you can't tell where one ends and the other one begins, because both items are colored similarly - various shades of blue.
        
             
        
        
        
Answer:
C. exclaim a thought loudly
Explanation:
In lines 1,5, 14, and 18, the poet puts a question mark before the end of the line. The poet does this to "exclaim a thought loudly".
The use of question mark by the poet was unique. It made the thoughts of the poet to heard louder. Readers of the poet will be willing to know the answers to the questions in the following lines. 
The use of question marks was to exclaim a thought loudly. 
 
        
             
        
        
        
What is this ? Is this a question
        
             
        
        
        
yep. I did this in 7th grade and 99.9% thats the right answer
 
        
                    
             
        
        
        
Answer:
#3 is: electronic communication makes it difficult to convey and understand tone