The correct answer is "She has a great deal of youthful optimism".
Explanation:
In the novel "Daisy Miller" by Henry James, the protagonist Daisy Miller is free-spirited, very optimistic and goes against all societal expectations in Europe. This behavior was a reason for envy from many people, including Frederick Winterbourne, who did not like Daisy being too optimistic because he was all cynical and world-weary.
