Final answer:
Atticus Finch handles disagreements with Aunt Alexandra in a calm and diplomatic manner, while also maintaining his own opinions.
Step-by-step explanation:
In the novel, 'To Kill a Mockingbird', Atticus Finch handles disagreements with his sister, Aunt Alexandra, in a calm and diplomatic manner. He insists that the children, Scout and Jem, respect their aunt, but he also stands his ground and maintains his own opinions. For example, in one instance, Aunt Alexandra expresses her disapproval of Scout's tomboyish behavior, and Atticus defends Scout and encourages her to be herself.