Ranking questions are only available within a Poll campaign.
Create your answers as you would do within any closed question.
Answers can be made of texts, images and/or multimedia (audio/video).
At the end of the question you need to select a number of elements to be ranked. In order to do that, choose a minimum and maximum number of elements.
If you wish to rank a predetermined number of elements, just indicate the same value in both zones (minimum and maximum numbers).
Ranking questions are totally supported by mobile devices.