The correct answer to this open question is the following.
Although you did not include options for this question we can say the following.
Walt Masters is different from the boys in that he was not really large, we can say he was short, and he expressed adulthood by the look on his face. He was as young as the other boys, but he had a little more experience than the rest. He was a poor young man that grew up in the wilderness, not having had any contact with modernity. The author says that he was only fourteen-years-old.
American writer Jack London(1876-1916) was the author of the story "The King of Mazy Man." He also was the writer of the famous novel "The Call of the Wild."