I just realized that I missed a possible correct answer for a filled in the multiple blank questions (only for one blank though) and it doesn't regard the question for students who have already taken the quiz when I add more possible correct answers. What is the fastest way I can regrade this question? There are 300 students and due to quiz statistics I probably have to regrade around 150 of them. Any kind of automation would be super helpful!
P.S. I read the documents and it seems automatic regrading is only possible for multiple choice/answers and T/F questions but even previously I had to regrade a multiple answer question manually because it was linked to a question bank and it took me a lot of time and I never could actually fix it in the quiz, I only could use fudge score to adjust their scores. I can't believe regarding options for canvas quizzes are so limited!!!