The mood (or tone) of the prologue is considered as sombre, dark, macabre... since from the start we're being told that this story is going to be a story of love, death and loss.
I’d say the first one because in the text it said they worked hard to build a life and in the answer in said worked hard. In the text it says soon gained status and in the answer it says quickly. It seems to be the best one in my opinion because it talks about them gaining status unlike the other ones who just talk about the impact on other farmers.
Repetitious or Drab, Hope this helps!
I believe it is A. I don't know what "The Odyssey" is, but I believe this is the best answer. Vain: producing no result, useless.