"Appalachian mountains" is incorrect since "Mountains" should be capitalized as well because it's a proper title. And "Ethiopian" should be capitalized as well since it is a location. "Uncle Pauly" and "TS Eliot Society" should be capitalized since they are proper names.
A "working title" is a title by which an author or a movie director
can refer to his work in progress, with the understanding that they
don't intend for that to be the title of the final product, and that
it'll definitely change before it goes out to the public.
That way, they don't have to keep calling it "the book I'm writing" or
"the movie I'm working on". Instead, they can talk about "Cover to Cover"
or "Thirty Frames a Second", even though those are crummy titles.
Answer:
The answer here would be C.
Hope this helps!!