Because they are monsters so the answer should be C
Answer:
Justine confesses to the crime, believing that she will thereby gain salvation, but tells Elizabeth and Victor that she is innocent—and miserable. They remain convinced of her innocence, but Justine is soon executed. Victor becomes consumed with guilt, knowing that the monster he created and the cloak of secrecy within which the creation took place have now caused the deaths of two members of his family.
Explanation:
The author conveys the joy in the excerpt given above through the use of ALLUSION.
Allusion is a figure of speech, in which an individual indirectly refer to an object or a situation from an external context; allusion usually refers to a story, object, person or event that is well known in order to make readers to make comparisons in their minds. For instance, a writer can make an allusion to the story of David and Goliath in order to establish his belief that an unlikely person may end up wining a particular fight.
I believe the correct answer is principles. Hope this helps! :)