Just install the application in your environment and click on open in browser.
Login as user mentioned in login page.
Here you can take the quiz or can see the questions saved in the database and can modify them.
Once the quiz is begun user cannot see the solutions before reaching the last question.
After submitting the last one you will redirect to the result page where u can see the result and can retake quiz or can see the solutions.
In the solutions page you can check the answers for each question.
This is the sample quiz created by me to the beginners in outsystems.