A script to insert a row below based upon the value of a drop down box selection

So, I tried to put all the info into the title but here's the expanded version.
I'm working on a template to put together to send to some clients of mine and there's one worksheet where I'd like to insert a row (from another worksheet or cell) contingent upon whether or not a specific drop down menu was selected.

Is this even possible?

Let me give a little more information.
I'm trying to have a client fill out survey questions. However, sometimes the category changes or the demographic data changes, when one of those drop down boxes is selected then I would like to add a row (or even un-hide one below it)