What Program Command Saves a Copy of a File Under a Different Name?

The answer

The command is Save As. When you choose Save As, the program keeps the file currently open on screen untouched and writes a new, separate copy using whatever name, folder, or file format you specify. You end up with two files: the original (unchanged) and the new copy you just named.

This is different from the plain Save command, which writes your changes back into the same file, overwriting the previous version. The classic rule of thumb: the first time you save a brand-new document, Save and Save As behave the same because there is no existing file yet — but on an existing document, Save overwrites and Save As branches off a renamed copy.

Why the other options are wrong

• Save: Overwrites the original file in place. It does not create a differently named copy, so it fails the requirement in the question.
• Copy: In most programs the Copy command puts selected content (text, cells, an image) onto the clipboard so you can paste it elsewhere. It operates on content inside a document, not on saving the whole file under a new name. (In a file manager, "Copy" duplicates a file but does not let you rename-while-saving from within the application.)
• Duplicate: Some apps (notably on macOS) offer Duplicate, which instantly clones the open document into an untitled copy. It is close in spirit, but it does not by itself prompt you to choose a new name and location the way Save As does — and on standardized computer-literacy tests, Save As is the expected term.

The bigger picture

Save As is one of the most useful commands to master because it protects your work. Common real-world uses:

• Versioning: Keep report-v1.docx, then Save As report-v2.docx before major edits, so you can always return to the earlier draft.
• Changing file format: Save As lets you export the same document as a PDF, an older Office format, or a plain-text file by picking a different type in the dialog.
• Templates: Open a master template, Save As a new project name, and edit the copy while the template stays pristine.

Keyboard shortcuts speed this up. In Microsoft Windows apps, F12 opens Save As directly; Ctrl + S is plain Save. On a Mac, Shift + Command + S performs Save As (or Duplicate, depending on the app). In Google Docs, there is no traditional Save As — the equivalent is File → Make a copy, which creates a renamed duplicate in Google Drive, since Docs autosaves the original continuously. Knowing this cross-application mapping — Save As in Office, Make a Copy in Google Docs, Duplicate on macOS — is exactly the depth these quiz questions are checking, even though they accept the single term Save As as the answer.