Which of the following command is used to add hyperlink in a document ?

The correct answer is (b) Ctrl + K.

Ctrl + K is the keyboard shortcut for inserting a hyperlink in a document. When you press Ctrl + K, a dialog box will appear that allows you to enter the URL of the website you want to link to. You can also choose to link to a file on your computer or to an email address.

Ctrl + F is the keyboard shortcut for finding text in a document. Ctrl + B is the keyboard shortcut for making text bold. Ctrl + V is the keyboard shortcut for pasting text.

I hope this helps!