💡 Detailed Explanation
The speaker is apologizing for a hasty mistake ('早とちり' - hayatochiri) and expressing extreme embarrassment with the idiom '穴があったら入りたい' (ana ga attara hairitai - 'I wish the ground would swallow me up'). A supportive and forgiving response is expected from a superior. '誰にでもあることだよ。気にすることないよ' ('It happens to everyone. Don't worry about it.') is the most appropriate, reassuring reply. The other options are either a literal and sarcastic response to the idiom or a blunt confirmation of the mistake, which lacks social grace.