Which is MOST CLOSLY identifies a theme in this passage?

A. Regret is destructive and leads to anger and hostility .

B. We must learn from are mistakes and make amends for all past errors .

C. It is better to think about future plans than focus on past regrets .

D. It is better to express emotions privately than to communicate them publicly .

A. Regret is destructive and leads to anger and hostility.

is this right ?

Yes, that is correct. The passage discusses how regret can be destructive and lead to negative emotions like anger and hostility.