Qualtrics is the preferred platform for collecting data through a computer-based survey because it allows for fully anonymized data collection (select "Anonymize Response" under Survey Options). You can access the free version of Qualtrics here:
https://www.qualtrics.com/free-account/
Other platforms (i.e. Google Forms) may be approved if the free version of Qualtrics does not meet your needs. Survey platform choice should be explained in your application.