If the character starts and ends in the same place, the plot has gone in a circle. For example, if Charlie was having problems with his teacher at the beginning of the story, and the story talks about the many weeks he has tried to fix these problems, yet the story ends with him still not resolving these problems, the plot had gone in a circle. There is not resolution, no ending, no fix.
d, first person point of view
I am pretty sure that the correct inference of the given passage from "The Cask of Amontillado" is the option : The narrator will make sure Fortunato is comfortable in the vaults. I consider this option as a correct one because Fortunato was killed by <span>Montrasor in this story. Do hope it will help!</span>
Nick learns from Jordan Baker the details of Tom's behavior in Santa Barbara after his and Daisy's honeymoon. She tells Nick that Tom was involved in a car accident that made the newspapers. He was with another woman, a maid at the Santa Barbara Hotel. Her arm was broken. This shows Tom's infidelity began early in his marriage and continued. Daisy was aware of it (everyone who read the newspaper was aware of it), but she remained in her marriage and gave birth to their daughter several months later.