Science fiction exemplifies the literary genre which is inclined towards displaying imagined futuristic concepts including scientific facts, technological advances, etc. The short story 'Exhalation' by Ted Chiang is categorized into this genre as it carries the plot of a scientist's (probably narrator's) experiment of dissecting his own brain. Thus, the element that leads to the characterization of the story as a work of science fiction is 'the narrator's self-dissection experiment'. Therefore, <u>option B</u> is the correct answer.
I think that the theme of "The Tell-Tale Heart" is your conscience will always be there. In the story, the man murdered the old man and hid him under the floor, and his conscience drove him mad and ended up proving to himself that he is insane.