puffpapa a dit :

Or better yet, there could always be a big button on the corner of the screen that lets you take the quiz. Perhaps it could stay there until someone decides to take it?

Forgive me for this, but I recall there being one on Club Penguin back when I played.
It looked like this.

It gave you an item for successfully passing the quiz with a perfect score.

This way it won't seem patronizing or blatantly intrusive, but rather an option that is highly recommended, seeing as it's always going to be there until you pass the quiz [quite like these thingies right here].