What command would you use to delete a file in Windows?

The command used to delete a file in Windows is 'del'. This command operates in the Command Prompt and allows users to specify the name of the file they want to delete, along with optional parameters for additional functionality, such as forcing deletion or specifying files based on attributes.

The other options provided—'remove', 'erase', and 'clear'—do not serve the purpose of deleting files in the Windows environment. 'Remove' is not a recognized command in the Command Prompt for file deletion; while 'erase' is synonymous with 'del' and could technically work in some contexts, 'del' is the more commonly used command. 'Clear' is not associated with file deletion at all, as it is used to clear the content of the terminal screen in some command-line environments. Therefore, 'del' is the appropriate command for the task at hand.