In Linux, which command is used to remove files or directories?

The command used to remove files or directories in Linux is 'rm.' This command stands for "remove" and is a fundamental tool in Unix-like operating systems for file management. When executed, 'rm' can delete one or more files, and with additional options, it can also remove directories. For instance, using 'rm -r' allows for the recursive deletion of directories and their contents. This command is essential for maintaining filesystem organization and managing disk space efficiently.

The other options do not perform the required action: 'delete' and 'remove' are not standard commands in the Linux command line environment, and 'clear' is used to clear the terminal screen rather than for file management. Thus, 'rm' stands out as the correct command for removing files or directories.