No personal data is collected.
According to Article 4(1) of the GDPR, “personal data” is defined as follows:
“personal data” means any information relating to an identified or identifiable natural person (hereinafter referred to as “data subject”); An identifiable natural person is one who can be identified, directly or indirectly, in particular by reference to an identifier such as a name, an identification number, location data, an online identifier or to one or more factors specific to the physical, physiological, genetic, mental, economic, cultural or social identity of that natural person."
We cannot establish any connection to your person from the information you provide in the survey.
We also refer you to the Limesurvey privacy policy: Datenschutzhinweise