Thank you for responding to my question.
4. I mean "responsive" in the technical Web development sense; using the same markup for intelligent adaptation to different screen dimensions and resolutions through the use of a grid system and media queries. Responsive frameworks include Bootstrap (http://getbootstrap.com/
) and Foundation (http://foundation.zurb.com/
). From my research I did not conclude that SoSci Survey was responsive in this sense.
Another way to pose my question might be, "how can I create a SoSci Survey frontend using Bootstrap or Foundation?"
I appreciate your attention to my questions.