Surely you jest, brother LanX? That was almost 2 months ago. I can barely remember what I had for lunch yesterday.
There were certainly some questions where multiple answers were available, eg. "Q5 What other languages do you use?" but I don't immediately recall if the IDE question was one of them as I would not have entered multiple answers there anyway.
The survey is useful in a qualitative fashion but I agree that the results could have been better presented. It's unclear whether that's the fault of BiP or of surveyplanet.com (or both).