You can duplicate questions when you're setting up a quiz and it's very easy.
First to create a quiz login to Member App and select the course that you want to add a Quiz, Poll or Test to.
The course creation engine will load. Navigate to the module you want to add the Quiz, Poll or Test to and select this icon here:
Now you can name your Quiz and choose whether you require a your students to achieve a certain pass mark or not.
Once you've done that you'll then be able to add Questions to your quiz. Add a question by clicking on the button '+ Add question'.
Once you've added a question. Specify what type of answer you require and type in your question.
Now to duplicate this question as well as the answers navigate to the top corner of the question area where you'll find 3 dots.
Select the dots to dropdown a menu. Select 'Duplicate' from within this menu to duplicate your question and it's answers.