When is the latest time the establishment opens on weekends?

The correct answer indicates that the establishment closes at 11 pm on weekends. This aligns with typical business hours for restaurants and bars, allowing for a late-night experience without extending too late into the night, which can be important for balancing customer flow and staff safety. Closing at 11 pm often accommodates late diners and provides time for the staff to properly close down and clean the establishment after patrons have left.

It is likely that other options, such as 10 pm, 12 am, and 9 pm, do not reflect the establishment's operational hours, as they either end earlier than usual for weekend dining or extend beyond typical acceptable hours for many businesses, especially if there are regulations in place regarding noise or alcohol service.