The answer is B, as it helps not only to keep the reader's attention but to also inform or persuade them more to a topic. In addition, it is also sometimes used to help convey a specific emotion, thus helping the reader get more into the text.
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.
Answer:
B. Will Buck encounter more violence?
I believe the answer is bracket sentence that address your point. i googled it.
hope this helps