Why does Twilly feel that hope springs eternal?

Twilly feels that hope springs eternal primarily due to the resilience of the children he knows. This perspective highlights the idea that even in difficult circumstances, children often demonstrate remarkable strength and optimism. Their ability to bounce back from challenges and maintain a sense of hope can be inspiring and can influence Twilly's outlook on life. Observing the unwavering spirit of these children likely reinforces his belief that hope is a fundamental aspect of the human experience, suggesting that regardless of adversity, there is always a potential for a brighter future.

This understanding connects deeply with themes of resilience and optimism, emphasizing how the spirit and determination of others can foster hope in one’s own life. The other options, while they touch on elements of positivity and belief in the future, do not encapsulate the specific reason based on Twilly's observations and experiences with children that inform his view on hope.