The correct answer is option D. "A person works through her doubts to achieve a worthwhile goal". "A Cub Pilot" by Mark Twain is the story of an apprentice of pilot that have to deal with his boss and overcome his situation, while "Barrio Boy" by Ernesto Galarza is the story of a young Mexican boy that rises from living in a small village to Sacramento, California. Given that both stories involve people rising against the odds, it is very likely that both authors would praise a story that involves a person that works through her doubts to achieve a worthwhile goal.