Answer: A) the act of telling a story becomes part of the story.
Explanation: the definition of metafiction is fiction in which the author self-consciously alludes to the artificiality or literariness of a work by parodying or departing from novelistic conventions and traditional narrative techniques. In a more simple way, is when the author refers to fictional writing and its conventions, so from the given options, the most appropiate is option A, metafiction is when the act of telling a story becomes part of the story.