Since self assessments are not graded and have no point value, D2L recommends that you provide feedback comments for each self assessment question. You can provide feedback at the end of every question. In some question types (like multiple choice), you can also provide feedback for each answer choice within the question, including what details instructors are looking for in an ideal answer.
All question types allow you to include feedback and hints. Use feedback to provide added information as a basis for improving content comprehension. Use hints to suggest how to approach a question. If you want users to see hints to questions, you must enable hints when you create the self assessment.