Select the most appropriate meaning of the given idiom.

At the eleventh hour

Just before the deadline

The most appropriate meaning of the idiom "at the eleventh hour" is just before the deadline. It is an informal expression that means to do something at the very last minute, or to wait until the very last minute to do something. The idiom is thought to have originated in the 19th century, and it is believed to be a reference to the fact that the eleventh hour is the last hour of the day.

The other options for the meaning of the idiom are incorrect. Time for debate does not mean at the eleventh hour. Very late in the evening does not mean at the eleventh hour. A state of confusion does not mean at the eleventh hour.