The correct answer is option D. "moving the story forward and increasing dramatic tension.". In "The Metamorphosis" by Franz Kafka, Grete and Gregor's parents had to adapt to the disappearance of Gregor, the father had to find a job at a bank, but each member of the family had to slowly changed and had its own metamorphosis. This situation help to move the story forward and also add additional dramatic tension besides of Gregor's transformation.
