The correct answer is B. A motif
Step-by-step explanation:
In literature including novels, short stories and even poems the repetition or recurrence of an idea, object, sound or situation that forms a recurring pattern is known as a motif. In literature, motifs are commonly used by authors to empathize a certain idea that can support the main theme or underlying idea of the literary work or be different from this. Additionally, motifs differ from symbols because motifs are recurrent during the development of the story. This means in the case of the recurring pattern shown by the Wakatsuki family that is forced to leave home multiple times, this pattern refers to a motif.