I know there is an auto-complete feature in workflow designer but how do I force the form to auto complete based on a condition? 

We are attempting to create a three-attempt quiz. I want the task form to be “completed” the second they make a 3rd attempt to avoid users from refreshing the form. I don’t want to overly complicated more than I already have had to do with just trying to make a concept of a “quiz” in NAC similar to a quiz using MS Forms. Any thoughts on an OOB solution to make this happen?