Only one quiz option allowed to be selected

[amandaa66376926]

Hello, I have a multiple-choice question that will only allow users to select one specific answer when it is exported. For example, I have marked the corrected answer as "b" but when I publish the scrom file, learners are only able to select choice "a" 

[Lilybiri]

Did you delete any of the embedded objects on the master slide or on the quiz slide? Did you try to recreate that quiz slide?

[amandaa66376926]

This quiz slide was pasted from another slide and the content was changed. But I used this same method for all of my other quiz slides 

[Lilybiri]

Copy/paste for a quiz slide? Not to be recommended at all. If you delete embedded objects, sooner or later you'll get problems.