The answer that you're looking for is Stunning.
The simile of Lines 18 through 23 compares the storm clouds that whip across the sky from the horizon to the zenith to: locks of hair of a frenzied woman. (Ode to the West Wind).
Im guessing it gives them an advantage of there essay like if u were to say dogs suck u could have a counter claim but idk if thats right sorry :(