Answer found.
This works for Adobe Acrobat DC, although I had to do the bookmarks one at a time (I'm a beginner). I am using this on a word processor document that I converted into an editable PDF file using the word processor's standard tools. I'm told MS Word has this feature. I use WordPerfect X7, where it's a standard one-click menu item called Publish to PDF.
Okay, let's assume you have already created the bookmark, given it the name you want, and you checkmarked the Wraparound feature so that your bookmark can have as long a name as you want. Now you want the bookmark to have the "Inherit Zoom" property.
So ---
(1) Open the bookmark navigation pane. Do this by left-clicking the bookmark icon located on the left side of the screen.
(2) Right-click on the bookmark that you want to edit, and a menu will appear. Choose "Properties . . ." from the menu.
(3) A dialog box will pop up. Choose the "Actions" tab of the dialog box. The Actions panel has an upper area and a lower area.
(4) In the upper ("Add an Action") area, the "Select action" operator should be set to "Execute a Menu Item"
(5) In the lower ("Actions") area, highlight the item "Go to a page in this document" and then click the Edit button.
(6) Set the "Zoom: " selector to "Inherit Zoom". Then click OK, and then click OK again to complete the job.
(P.S. Are you a lawyer fling a legal brief in the California Second District Court of Appeal? Their local rules insist on having electronic bookmarks for every component, table, exhibit, brief heading and sub-heading, and all of them must have the "Inherit Zoom" property.)