Indicating the correct missed answers after submission is a valuable asset for any online quiz. It releases the pressure of the online quiz owner to manually search the missed answers of a submission on demand.
By default, respondents will only see if their answers are correct or wrong. To show your respondents the answers they’ve missed, go to the Settings → Advanced section of your form and tick the option Show missed answers. Save changes and you are done. The missed answers will be displayed on the page of the quiz results.