Since you did not put up an answer choice, the purpose for Whitman's use of repetition of words and sounds is to underscore the theme for emphasis, and for emotional effect.
Answer:
The second article I chose was “Why do Some Brains Enjoy Fear?” by Allegra Ringo. ... Kerr relates this attraction to fear as a method of getting a “natural high from the fight or flight response.” Additionally, Kerr goes on to state that individuals feel a sense of pride and accomplishment from facing fears.
Explanation: