I would go with option number [2]
Answer:
Jacobs creates suspense through the use of setting, foreshadowing, and purposeful omission. The story takes place at the White residence, which is relatively isolated and located away from the nearest road. This isolated location adds to the haunting atmosphere of the story and is significant to the plot. Jacobs also foreshadows the ramifications of wishing upon the magic monkey's paw through Sergeant-Major Moris's enigmatic story.
Explanation:
She returned to school and earned good grades to graduate.
As in so many mystery novels, Roger Ackroyd is set in a small, isolated community where everybody knows everybody else. The isolated, close-knit setting 1) suggests that the criminal is someone who everybody knows, and 2) creates a paranoid, suspenseful mood, since the criminal is hiding a big secret from their neighbors. It’s also telling that the owners of the two most “important houses” in town are also the two main victims of the novel.