What setting can be created on a PDF document using certificates to restrict access and limit some user's abilty to make changes?

In order to permanently remove a cropped area from Acrobat Pro X:

Which of these items is not displayed on a note?

Which of these is not a radio button style?

In the Print Dialog Box, which option specifies which visible content prints?

On which menu do you find insert, extract, and replace page tasks?

Which of these actions is allowed when working with layers?

Where would a user enable single key shortcuts?

Under what menu can a user enable comments for Reader?

Which settings option applies to the Convert a Word document to PDF tool?

What is a PDF?