If you'd like to redo the assignment, you can ask your teacher if they would reset your progress. Resetting your progress will erase your initial attempt at the assignment so that you can try again.
If you want to change your answer to an open-ended question or include more detail in any of your responses, check with your teacher to see how they would like to handle this situation. Progress can only be reset for an entire assignment and not for individual questions within a video.
Once your progress is reset, we can’t recover the grade or responses from your first attempt so make sure that you’re ready to rewatch all of the video and answer all questions again before asking your teacher about this.
If your teacher needs help resetting your progress, they can find instructions here.