Choice (d) is correct. The incorrect use of can be found in choice (d) where there are two ellipses used in one sentence and is not only ambiguous but the meaning is already changed. There should no ellipses when the sentence is short and continuous which is the case of the first clause.
It is a story about the experience as a migrant farm worker.
I believe the correct answer from the choices listed above is the second option. The part of a plot structure introduces the characters and setting would be exposition. It <span>is the insertion of important background information within a story</span>
Hope this answers the question. Have a nice day.