GIFs can be used to simulate that something is loading in the background, or that results are being computed.
To achieve this result, create a new page before the result page that should be delayed by the loading animation, then add the Loader element.
The Loader element is essentially the Image + Page Timer elements being used together.
Here is how it all works:
In the Image element, upload your favorite animated gif (Check the copyright!).
The Page Timer element will be hidden, so all you need to do here is set the time to the desired effect level you wish to have (to user Page Timers, the Basic plan or higher is needed).
In the example above, the time is set to 5 secs. After this time, the quiz will automatically continue to the "Thank you" page.