Answer :
A novel, that's what a long work of fictions is, a novel
The correct answer is C) novels.
The precise noun to replace the underlined vague noun and adjectives is "novels."
In literature, a novel is a long narrative in which the author writes its story in prose. We the author does is to write the story as a series of events that are intertwined to create the topic and interest of the story. The author creates characters, locations, situations, and the story has a beginning a climax, and an end.