Can I change my responses before completing the test?

Yes you can. Before clicking on the “SUBMIT” button at the end of the assessment tool you can navigate through the answered questions by clicking the Previous/Next buttons and you can change your responses:

How can I see prompt content that is needed for an answer?

At some questions you will see a box with a title and the “+” symbol. By clicking on the box, a content essential for the answer is revealed.