Using comments, you can give your learners more information about the answer and explain why the answer is right or wrong. The learner will see the comments in the quiz results
The comment option can be used in such questions as Multiple Choice, One Choice, and Yes/No
To enable this option, first of all, go to the Quiz Settings and activate the Show quiz results
Then go back to the quiz questions and choose Enable Comments
The fields where you can leave your comment will appear below every answer