Final answer:
In the story “Loser” by Aimee Bender, the author uses a flashback in paragraph 28 to develop the young man's talent for finger spelling.
Step-by-step explanation:
In the story “Loser” by Aimee Bender, the author uses flashback in paragraph 28 to develop the young man's talent. The paragraph describes how the young man's talent for finger spelling was discovered in his childhood. It provides an example of his finger spelling abilities, stating that he could spell out entire words in the air with his fingers. This flashback demonstrates the young man's natural talent for finger spelling and sets the stage for further exploration of his talent throughout the story.