What is the shortcut key of printing a document for computer having windows?

The correct answer is A. Ctrl + P.

The shortcut key for printing a document in Windows is Ctrl + P. This shortcut can be used in any program that supports printing, such as Microsoft Word, Excel, and PowerPoint. To use the shortcut, simply press the Ctrl and P keys at the same time.

The other options are incorrect. Shift + P is the shortcut key for opening the Print Preview window. Alt + P is the shortcut key for opening the Paragraph dialog

I hope this helps!