This article does a great job at explaining how to differentiate questions using Google Forms. Learning to do this can also apply to other apps such as making assessments in Google Slides. Each of these use a method this author calls "branching."
Basically when looking at your test, you need to ask your self a question each time you the student clicks on something. For example, what should happen if the student clicks the wrong answer? Should the test continue on to the next question as normal? Should it go to a different question? OR should it go to another resource so the student can review the topic?