Answer: The heroes are usually flawed in some critical way.
Explanation: To answer this question, just take a classical epic and plug it into the answers. Take The Hobbit, for example. Bilbo, the hero of the story, goes on a journey outside of his normal world. He battles trolls, goblins, and other monsters along the way, and the series Lord of the Rings continues his story with his nephew Frodo, making the epic pretty long. The only choice that does not fit this story is B.