Which MOST CLOSELY identifies a theme in this passage?

Responses
A Regret is destructive and leads to anger and hostility.Regret is destructive and leads to anger and hostility.
B We must learn from our mistakes and make amends for all past errors.We must learn from our mistakes and make amends for all past errors.
C It is better to think about future plans than to focus on past regrets.It is better to think about future plans than to focus on past regrets.
D It is better to express emotions privately than to communicate them publicly.It is better to express emotions privately than to communicate them publicly.