D).
Linguist is the study all about a language spoken written and the modern ways of using it via slang etc.
Answer:
deltree /y E:\world
Note that the /y option simply tells it to go ahead and answer yes to any confirmation prompts that might occur. Not necessarily part of the desired answer.
Explanation:
The deltree command tells the system to recursively delete a directory and its contents.
Telecommunications! Have a great day! :)