Shortcut key used to create a new document file in MS-Word is

Ctrl + S
Ctrl + N
Ctrl + F
ctrl + o

The correct answer is (b) Ctrl + N.

Ctrl + S is used to save a document.

Ctrl + F is used to find text in a document.

Ctrl + O is used to open a document.

Ctrl + N is used to create a new document.