This article describes how to access the variables and questions in your project so that you can modify things like variables names, labels and question types.
Method
All variables and questions can be access by clicking on the the Variables and Questions tab at the bottom of the screen.
You can go to a specific variable or question by first selecting it in the blue drop-down box on the Outputs tab and then selecting the arrow to the right of the drop-down box 
. This will take you to that variable/question on the Variables and Questions tab.
Similarly, select the arrow to the right of the brown drop-down box to go to it on the Variables and Questions tab.
Next
How to Merge Multiple Pick One - Multi or Grid Questions
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