Final answer:
Mark Twain's experience as a riverboat captain and the writing technique of local color enhance the exposition of chapter 8 in Huckleberry Finn.
Step-by-step explanation:
In chapter 8 of Huckleberry Finn, Mark Twain's experience as a riverboat captain and the writing technique of local color enhance the exposition of the chapter. Twain's personal experience as a riverboat captain allows him to vividly describe the setting and atmosphere of the river and shore scenes, providing readers with a realistic and immersive experience. The local color writing technique, which emphasizes the unique customs, dialects, and traditions of a specific region, adds authenticity and depth to the characters and events in the chapter.