Hello Scroderick,
Welcome to Adobe Forums.
Yes if the use will move the incorrect answer , It will come back to its original position and you can also type failure text (like this is incorrect) .
I have some urls related to Drag and Drop interaction which might be helpful to you
http://helpx.adobe.com/captivate/using/drag-and-drop-interaction.html
http://www.youtube.com/watch?v=usOV_IrGNA4
Hope this helps !
Thanks and Regards
Himanshu Satija