Final answer:
CTRL+N is a universal shortcut to create a new blank document regardless of the operating system or whether the current document is saved in cloud storage.
Step-by-step explanation:
Pressing CTRL+N creates a new blank document. This shortcut is universally used in many applications, not just on a Mac computer, and is applicable whether or not the document you are working on is saved in cloud storage. When you instruct users to click on "File" and choose "Make a copy," you are providing guidance on how to create a duplicate of an existing document within Docs, which is different from creating a new blank document.