By default, after completing a quiz on Desire2Learn you are shown your score, but nothing else. However, many professors will open up the correct answers after all students have completed the quiz. Here is how to view them.
1) After logging in to your Desire2Learn course, click on Quizzes in the course navbar
2) You will be shown a list of all past quizzes under the Past Quizzes heading. Next to the title of the quiz, there will be a small drop-down button. Click that, then choose Submissions.
3) You will be shown a list of all of your quiz attempts. Click on Attempt 1.
4) You will then be presented with a copy of the quiz, with the correct answers labeled. If you answered a question incorrectly, the correct answers will be shown with a blue arrow.