An Answer Key is available to instructors for summative assessments. It provides you with a view of all questions in the assessment, with all of the answers and feedback exposed. If your course contains quizzes with multiple iterations, you will see all question sets available, even if students are not exposed to all questions in a single attempt. The Answer Key therefore allows you to review the content without having to click through all the questions.
To access the assessment-level answer key, click on the Answer Key button ion the the cover page for a scored assessment: