The correct answer is the letter B irony
Doing a good job on a task given is more important than rushing and doing a bad job and fail at the task given
It would be rainsford falling off the yacht because at that point you wouldn't know what is going to happen and that eventually turns into a series of events.
I don’t know which specific novel you may be referencing, but generally:
Literary devices can be used to convey theme in many ways. You can use them to convey theme by describing the setting of the story, the mood of the story, the moral of the story, and much more.
You can use foreshadowing to hint at future events important to the story, symbolism to represent important objects relative to the theme, such as a dove in heaven, and you can use a metaphor to assert that one object is another, which brings new meaning to the original subject for a renewed comprehension. These can all improve the conveyance of theme in a story.
These are just a few of the many different literary devices that you can utilize to articulate subjects within a story to add to the understanding or to signify the importance of any detail within the story.”