Answer:
Science Fiction (often shortened to Si - Fi or SF )is a kind of writing . Science fiction stories can be novels , movies , TV shows , conic books and other literature .
To step up for their country
Im 100% sure the answer is A. it has the word "like" with comparing the shell to a rock. also its the only sentence comparing two things.
The answer is A!
It should read;
Looking toward the south, I saw a funnel shaped cloud stir up the dust.
The cloud can't see so a noun had to be added.