Explanation:
In “To Kill a Mockingbird,” Jem, the older brother of the protagonist Scout, broke his arm during a terrifying incident in the final chapters. While walking home from a Halloween pageant, Jem and Scout were attacked by an unknown assailant in the dark. In the chaos, Jem was knocked down, resulting in a broken arm. The identity of their attacker was revealed later to be Bob Ewell, seeking revenge for his humiliation during the trial in which their father, Atticus Finch, defended Tom Robinson, a black man falsely accused of rape.