There is a circle by each choice on a question. Once a choice is selected you cannot go back to no selection on both choices. How do I de-select both choices?

If you are using the online version of TurboTax, there could be some residual information within your computer causing the difficulty.  Please clear your cache and cookies to solve the issue.  Please see the following TurboTax articles for help in clearing your cache and cookies.

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If this is on a particular form, you can delete the form itself and then go back through the interview.  To delete an individual form, please follow these steps:

TurboTax Online

1. While in your return, click on Tax Tools > Tools (in the black bar at the side of your screen).  
2. In the Tools Center, under Other helpful links click on Delete a form.
3. Click Delete next to the form you want to delete and follow the onscreen instructions. 
4. Once you have finished deleting the desired form(s) click the Continue with My Return box (in the lower right of your screen).

TurboTax CD/Download

1. Go into Forms Mode by clicking on the Forms icon in the top right of the blue bar. 
2. In the Forms in My Return list on the left, click on the form you wish to open and delete.
3. Click on the Delete Form box at the bottom of the screen.
4. To return to the interview, click on the Step-By-Step icon in the top right of the blue bar.