For me, to make fiction realistic is to have normal people in the story and have something strange come out of the blue. For example, there are researcher that study UFOs, so maybe have a conflict that has something to do with UFOs. Hope that helps!!!
I would say that the lines which show us how desperate the poet is are the following:
"... helpless in my throes, Biting my truant pen, beating myself for spite--"
As you can see here, the poet says he is helpless, meaning that he cannot find inspiration to write what he wants to write. Therefore he is desperate for some inspiration, which is why he is biting his truant pen in order to show how anxious he is to get his inspiration back.
The answer would be C. This is because it shows a particular way of speaking that would be exclusive to a certain region.
