13. The Save As command is useful if you want to copy an open document and

A. give the copy a new name.

B. remain in the original document.

C. delete the original document.

D. link it to the original document.

A. give the copy a new name

The answer would be A because when you first press Save As you are creating it then you would just press save every time you have tweaked it but if you wanted to shop that you had tweaked it (for example) then you would press Save As. I may be entirely wrong so don't just use my answer!