Hello there!
I think correct answer to be C) the plot structure and setting of each!
The plot is the main events of a work, devised and presented by the writer as an interrelated sequence; it is related to the author's style and authenticity. In that sense, as you can compare how the work is developed, the plot and setting would be the most advisable aspects to begin when comparing.
Hope this helps!
If you're taking online English, the answer would be C. Swift uses understatement and irony when he says his plan is "a little bordering on cruelty" to highlight how cruel the plan really is.
What unit and lesson is this? I may have completed it already