The correct answer is C) Exposition.
The plot structure device that most likely will be used to continue the story is Exposition.
When writing or telling a story, Exposition is the part of the story that presents elements of the context of the story or background information such as the character's past, the environment, the circumstances, the location, previous incidents. All of these are important in order for the reader or the audience to understand what is happening and what is about to occur in the plot.