Answer:
Smaug is a dragon and dragons are attracted to gold & stuff. Thror was told to keep his treasure hidden in case the dragon saw him. But Thror refused and so the dragon stole his gold and killed the dwarves.
Explanation:
Multilevel. This word has a neutral connotation.
Dramatic Irony is when the audience knows something's going to happen, but the characters in the story don't.
The only possible answer could be Option A. The audience knows that these two characters are good friends, but the characters in the story think that they're strangers.
Good luck! If you have any more questions, just ask :))
-T.B.