Narrative poem and after a process of elimination teasing tone.
Hey there!
The correct answer would be choice C. irony.
The reason for this choice would be because in the story, Fortunato ends up being killed by the narrator, making it ironic that the narrator would say something about Fortunato's "long life".
Hope this helps!
Answer:
She shouldn't use a different car each trial, it makes the results less valid. Instead she should use the same car, and should just clean off the car after each trial.