What does the term perfidious most clearly mean as used in paragraph 6 in Of Revenge

Which of the following best explains why the author chose the compare-and-contrast structure for paragraph 2

4. at the conclusion of frankenstein, robert walton has an encounter with the monster, who arrives after victor frankenstein has died. perhaps surprisingly, the monster mourns his creator and expresses remorse over the fate that victor suffered. the monster pledges to destroy himself and then departs, disappearing as he goes further north. how does the monster’s behavior and attitude in this part of the novel affect the way readers view him? is he sympathetic? is he more hateful because it is only after victor has died that he relents? how does the change in the monster fit with the theme of duality in the novel?

Discuss how hawthorne uses irony in "young goodman brown" to develop a theme or a character. your answer should be between 250 and 300 words.