With this option, you can select N questions and one of those questions will be randomly displayed to the respondent.
To setup this type of randomization, click the Add New Question link for the question after which you want to insert the Randomizer.
In the Add Question wizard select the Randomizer option from the Advanced Question drop-down menu and click on the Add Advanced button.
Choose the Questions that you would like Randomized...
Choose the TYPE for the Randomizer.
Please Note: For the Randomizer to Work Properly you need to put the randomizer Question before all the Questions it is Randomizing.