Final answer:
Jem's statement about his father demonstrates humility and confidence in his father's abilities.
Step-by-step explanation:
When Jem says he does not have to brag about his father, it shows his humility and confidence in his father's abilities. Jem's statement suggests that his father's reputation speaks for itself, and he doesn't feel the need to boast about it. This demonstrates Jem's respect and admiration for his father's achievements.