I would like to suggest a “previous” button during the quiz. Not to change the answer but to read the explanation.
Sometimes, I forget to read the explanation of a wrong answer selected. I’d like to go back and read the explanation.
I think this feature might be useful? Of course, I am not asking to change the answer but the ability to review the explanation of a previous question.
If not, then perhaps at the end of the quiz where we get the score, there could be a selection of buttons to read the explanation for each question’s wrong answer.