Answer:
Experiences
Explanation: Lee through the story symbolizes the significance of experiences in our life which is the major development from childhood to adulthood and how these experiences assist in forming the opinion and perceptions. These experiences evolve both the kids Scout and Jem from childhood to maturity. They gradually observes drastic changes in their mannerism and behavior and turns thoughtful and courageous to face the hardships of life. The experiences make them strong and they learnt to look at things from people's perspectives.