The part where Zaroff tried to include Rainsford in his sick hunting game would be the best portray Zaroff as Rainsford's foil i think.
Beside that, they both actually are very similar with one another
B. A teacher travels each year to visit family in South Africa.
Langues chose, style of writing, and length of writing would be my answers.
tell me if i'm wrong
Thats kinda hard honestly but Guatemala is smaller than the US and they speak spanish