The correct answer is timedatectl set-timezone. This command is used to set the time zone of the system to the specified value. It's part of the timedatectl utility, which lets you view and change the current date, time, and timezone settings. The reason the other options are incorrect is that tzconfig is deprecated, date is used for setting the system's date and time but not the timezone, and timezone is not a valid command for setting the system time zone.