Depending on your quiz settings, the student extension box may contain additional options.
If the quiz has a time limit and you want to give more time, type the number of extra minutes in the Extra Time on Every Attempt field [1]. If the student hasn't taken the quiz, the extra time will be added to the student's initial attempt and additional attempts. Learn more about managing extra time in timed quizzes.
If the quiz is saved with the Only Once After Each Attempt option, you can let the student see the quiz results one more time [2]. Results include both their responses and the correct answers. Once the student has viewed the quiz results, the results view extension will be reset and the results will be hidden again. Learn more about limiting quiz results.
Note: If the Only Once option is selected and students have also been granted an extra attempt on the quiz, students will be able to view the results before they take the quiz, as well as after they complete the quiz. If students are allowed multiple attempts on a quiz, you may want to edit the quiz and select the Allow Multiple Attempts option, which gives an option to let students see their quiz responses only after the last attempt.