The coach advised the players not to cry over spilt milk after their loss.What does the underlined idiom mean?

Explanation

The correct answer is 'To regret something that cannot be changed'. The idiom 'cry over spilt milk' means to waste time worrying about something that has already happened and cannot be rectified. In this case, the coach is advising the players to move on from their loss instead of lamenting it. The other options do not accurately capture the meaning of the idiom. Taking revenge, hiding mistakes, and apologizing do not reflect the essence of not focusing on unchangeable past events.