I don’t think you should be posting this on an app like this-
Didacticism is a term that refers to a particular philosophy in art and literature that emphasizes the idea that different forms of art and literature ought to convey information and instructions, along with pleasure and entertainment. ... However, some literary texts are entertaining as well as didactic.
The answer is Sanger Rainsford, who is the protagonist, as he is the "good guy" of the story.
A - Timeline
A timeline would allow for historical events to be noted and compared to the events happening in the story (dueing that particular period in time).
A Venn Diagram would be most useful to compare (and contrast) one particular incident.
A chart is a little vague as to how it would be beneficial.
