All questions are optional: if you have privacy or confidentiality concerns about any of the questions, it is absolutely OK not to answer them. What information you can provide will be gratefully received.
This survey is running on Google Forms: that means that the compliance of this survey with GDPR and other data processing legislation can only be as good as Forms' support. I will do my best not to publish any individually identifying information that I receive as answers to this survey without permission. By all means e-mail me at firstname.lastname@example.org if you have any questions or concerns.
Thank you for your answers and your time!