Which command is used to display permissions and user/group ownership of files?

The command that displays permissions and user/group ownership of files is the one that lists files in a detailed format, showing essential attributes such as permissions, number of links, owner, group, size, timestamp, and the filename.

Using the option that begins with "ls" followed by "-l" is specifically designed for this purpose in Unix-like operating systems. The "l" stands for 'long listing format', which provides a comprehensive overview of the file details. Each file's access permissions (read, write, execute for the owner, group, and others) and its ownership (indicating which user and group own the file) are clearly displayed in this long format.

This command is invaluable for system administrators and users managing files, as understanding permissions and ownership is crucial for maintaining security and functionality in multi-user environments. The other choices do not fulfill this requirement. For instance, the option with "-a" is used to show all files, including hidden ones, but does not provide details about permissions. The option with "-h" typically formats file sizes in a human-readable format, and "list -l" is not a standard command in Unix-like systems. Hence, the correct answer provides the necessary information about file permissions and ownership in a