Answer:
I think that the answer is B
past participle is worked, present is working.
A.
In the winter, the town is filled with skiers who come for the beautiful Rocky Mountains
I would say the correct answer is A. the theme. Whereas a literary work depicts a plot of some kind, recollecting particular occurrences in the lives of its characters, its theme is a general principle that can be derived from it, a universal message that can also be applied to many other works of art. A single work of art usually has many themes.