You can add feedback to any assessment question created with New Quizzes. Students can view your feedback when they view their results after submitting an assessment. In addition to general feedback, students will see all feedback comments relevant to their answer choices.
You can also add feedback to any answer choice when creating a Multiple Choice question.
Locate the question where you would like to add feedback . Click the Edit icon .
Student feedback can be customized to display feedback for correct answers  or incorrect answers . You can also display the same feedback for all answers .
To add feedback, use the Rich Content Editor to create customized feedback . Your feedback can include images, media, or links .