Faculty are able to adjust scoring and correct answers for Quizzes after the attempt has been submitted by the student. This includes updating the question settings to allow more than one choice to be scored correctly.
Other faculty Quiz Guides
Any changes to question answers or scoring in a Quiz do not automatically apply previously submitted attempts. After any scored changes are completed in any Quiz questions, faculty need to apply the answer changes to past submissions using the re-grade process.
Step 1: Click on the Quiz or Assignment in the course.
Step 2: Once viewing the activity, click the Attempts link to view Quiz scoring.
Step 3: Click the check boxes for each student needing their Quiz rescored or Click the top check box to select all attempts.
Step 4: Click Regrade All to apply any question changes to selected attempts.