Do not hit anything on the event just ignore it completely or click the X in your requests manager to remove it. But for the love of god don't click Yes / No / Maybe, that's all they want from you, once you do that, you're stuck!!
And it gets worse! If you click any of the links on the event and follow the steps on the next page your account will be taken over! Do Not Under any circumstances click anything, this is not from Zynga!
If you go to those pages, Report It!!
LOL.. Non-Profit Organization.. Now You Should Know It's A Scam! Zynga Is Definately FOR PROFIT!!