You do not need to respond to every question, but you need to move through the survey and press the "submit" button for your survey status to show as complete.
The SED gathers information from new doctorate graduates from U.S. universities. See the Survey of Earned Doctorates web site for additional information.
After you complete the SED, you will be directed to a second questionnaire, the University of Chicago Doctoral Survey. University Administration asks doctoral candidates to complete both surveys.