Need to make it where none of the answers on the dropdown question are defaulted

I created this survey https://feaactioncenter.org/assess-the-test/teachers/.

It automatically defaults to the first answer. I need to not have a default answer. The default answer has 2 problems.
1. It means there is no use in making the question “required” because the default answer will be there.
2. It will screw results in favor of the default answer.

Please help.

https://www.ads-software.com/plugins/wp-survey-and-quiz-tool/