What type of desktop system is sarah using in the following scenario? sarah types the phrase “open document 3” onto a black screen, and the computer responds by opening the file she requested. direct user interface indirect user interface command-line interface graphical user interface

The answer is: CMD (Command line Interface)

Explanation:

Open is the command to open a documents in command line interface

and Document 3 is the document name. So that's why he/she uses this command to open the document from cmd.

I hope you get the idea.

Thanks

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