Final answer:
Scout brings Mr. Arthur (Boo) back inside to show gratitude and protect him from public attention, recognizing him as a friend.
Step-by-step explanation:
In To Kill a Mockingbird, Scout brings Mr. Arthur, also known as Boo Radley, back inside the Finch house to ensure his safety and to show him gratitude. After Boo Radley saves Scout and her brother Jem from Bob Ewell's attack, Scout leads him quietly back to his house. This act signifies her maturity and understanding of Boo's reclusive nature, as well as her realization that Boo is a true friend and protector. By escorting Boo home, she is protecting him from the public attention that would ensue due to his heroic actions, acknowledging both his privacy and the humanity beneath his mysterious persona.