Answer:
The right option is b - an existing work of art.
Step-by-step explanation:
When something is adapted, it means that it is derived from or based on an already existing work, whether it is a book, play, film, or any other form of art. Adaptations can take different forms, such as a film adaptation of a novel, a stage adaptation of a film, or even a musical adaptation of a true story. The key aspect of an adaptation is that it builds upon an existing work and transforms it into a new medium or format while retaining some elements of the original.