Loneliness. ^-^ It is lonliness because he is all alone and he means ghosts meaning no one else is there.
The correct answer is B.
A character study is an in-depth analysis of a literary character, in this case Louisa Ellis. There is not much action within the story (thereby canceling out the 3 other options), but we learn about Louisa's everyday lifestyle, down to the last detail.
Answer: B. creating a plan
If Sir Gawaine were devising a scheme to rescue his brothers, he would be creating a plan. To "devise" means to create or elaborate something, while a "scheme" refers to a plan of action, or a plot. The word is often used in reference to a plan that is secret, or dishonest.
Belief in the supernatural.
A main point of the Romantic era was the idea of intense emotional expression and the individual self, however it also dealt with an interest in supernatural interest and mysticism. There is a lot of influence from greek and roman mythology and the power of supernatural forces, so this makes the most sense.