Final answer:
The Romantic quality of supernaturalism in "The Mortal Immortal" is best shown by the presence of supernatural elements and the exploration of intense emotions.
Step-by-step explanation:
The Romantic quality of supernaturalism in the short story "The Mortal Immortal" is best shown by the presence of supernatural elements and the exploration of intense emotions.
The story features a protagonist who gains immortality through a supernatural elixir, which introduces an element of the supernatural into the narrative. This supernatural element adds a sense of mystery and wonder, contributing to the Romantic quality of the story.
In addition, the story explores intense emotions such as love, despair, and longing. These emotions are often associated with Romanticism, as Romantic writers were known for emphasizing the importance of emotion and the individual experience.