Answer:
Bud's ability has changed for the better, contributing greatly to his courage to go looking for his father.
Step-by-step explanation:
When Bud went to live with the Amoses, he was very afraid to impose himself, to defend himself and to be faithful to his own wishes. In this case, he behaved with great passivity, which contributed to the Amoses being extremely abusive towards him and promoting a completely inhospitable and unpleasant environment. This allowed Bud to understand, that acting the way others wanted did not protect him from anything, but left him in a disadvantageous position and so he decided to impose himself, take courage and face everything that tried to destabilize him.