How do you enable a field to be unselected by a user before submission

I created my forms and I have 2 questions that are bubble selects. If one is accidentally selected, the form does not allow you to unselect it. Is there a way tp change this?

I assume you were referring to the Single Choice field. Anyway, I can see that you have changed it with the Multiple Choice field. That's the proper tool to allow multiple selections and allow deselecting options.