Question

2. Why do you think the Radleys kept Arthur locked up for all this time?

Answer 1

Arthur was locked in the Radley's house because his father thought it was a disgrace to send him away.

Explanation:

Arthur Radley who was also known as Boo Radley was locked up because he was involved in a crime. The crime that he had committed was that he along with his friends had stolen a car and then he had also locked up the officer in the courthouse.

Boo was locked away due to his association with "an inappropriate group"; his dad felt that Boo being placed in a reformatory would be a humiliation to the family. In any case, the fundamental explanation is a result of Mr. Radley's strict enthusiasm.