Good morning, @jmk50 ...
Are you using current Classic Quizzes, or are you using New Quizzes? If you are using New Quizzes, I think you'll be able to do all of what you are asking. In taking a look at my own sandbox course with New Quizzes, there is an overall toggle switch (found in the "Settings" screen of New Quizzes) for "Shuffle Answers" that can be turned on/off. This would shuffle answers for all questions in the quiz. In addition, if I were to select a multiple choice type of question via the "Build" page, I also have a check-box for "Shuffle Choices". When I check that box, a padlock icon appears next to the answer choices that you supply...and you can choose to "lock" any answer choice so that it remains at that position. So, if you wanted "None of the above" to remain the fourth option, you can absolutely do that. Here are a couple Guides I think will be helpful to you:
If you do not yet have access to New Quizzes, check with your school's Canvas administrator or someone from their Online Learning / eLearning / Distance Education team to see what their plan is for letting you and your fellow instructors use New Quizzes in your course(s).
Hope this helps a bit!
