I am familiar with the process of editing and updating existing multiple choice questions in Canvas Quizzes. However, I am having difficulty getting rid of "correct answer comments," "wrong answer comments," and "general answer comments." I have tried opening the comment boxes underneath my answer sets, highlighting the text, deleting the text, clicking "done" and updating the question. However, when I return to my questions page, the general answer commentary still appears. When I try editing the question, it returns to normal as if I had not done anything. Is there a way to delete general comments, or will I have to recreate my questions?
Try switching the comment to HTML view, then delete all the HTML. Then update the question and save the quiz. Sometimes the deleting WYSIWYG content leaves empty HTML tags which Canvas interprets as content even if it is empty.