A. Criticizing a government, person, or institution
The key words in the question here are "higher purpose". Might an author retell a classic story or share the lives of ordinary people, yes. However, these do not accomplish a higher purpose. When undertaking a higher purpose, the story must do more than just tell a good story. There needs to be a second level of meaning or understanding. Often author's use literature as a way of criticizing powerful entities like the government, people, or institutions because they can remain safe and deny any harmful intent even if it isn't so.
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).
