Which option in /etc/fstab specifies group quotas?

The correct choice to specify group quotas in the /etc/fstab file is "grpquota." When you configure file systems in Linux, you have various options in /etc/fstab that dictate how those file systems are managed, including resource usage controls like disk quotas.

Using "grpquota" enables group quotas on the specified file system, meaning you can manage space allocation for groups of users. This is particularly useful in multi-user environments where different groups may need restricted access to disk space based on their usage or purpose.

The other options do not reflect the correct syntax or keywords used in the Linux operating system for setting group quotas in /etc/fstab. Each component in the /etc/fstab entry must adhere to specific terms that the system recognizes, and "grpquota" is the established term for indicating group quota functionality.