The Question and Answer section for King Lear is a great resource to ask questions, find answers, and discuss the novel.
I'm sorry, this is a short-answer literature forum designed for text specific questions. We are unable to assist students with unrelated subjects.
Are you referring to his questioning of his daughter's about their love for him?
Regan basically blinds Gloucester. Then Regan regrets blinding Gloucester because allowing him to live arouses sympathy which results in more parties turned against Regan and her company.