Final answer:
Huck's innocence, immaturity, and lack of knowledge about the world provide evidence of him being a youth rather than an adult in The Adventures of Huckleberry Finn.
Step-by-step explanation:
Evidence that establishes Huck as a youth rather than an adult in The Adventures of Huckleberry Finn includes his innocence, immaturity, and lack of knowledge about the world. For example, Huck is easily swayed by Tom Sawyer's fantastical ideas and becomes involved in dangerous and misguided adventures. He also struggles with understanding societal norms, often making impulsive and reckless decisions. These characteristics highlight Huck's youth and his journey towards maturity throughout the novel.