Ok, here are the answers:

Part 1. The correct answer would be to circle the perimeter of the diagram as that is the biggest circle.

Part 2. The right answer would be to circle the X that divides the diagram into four sections. This is the same idea as in section one.

Part 3. The correct answer is: since the purple house is one story, there are no stairs!

Part 4. The correct answer is they wouldn't be blown anywhere because it is winter and there are no leaves on the tree.

Part 5. The correct answer is to have written ( using cursive ) the word idiot, not to have printed the word.

Part 6. The correct answer is that survivors don't get buried, dead people do!!

Part 7. The correct answer is the cow, there is no such animal as a Mama bull, it's called a cow.

Part 8. The correct answer is whatever age you are, because you are the bus driver.

Part 9. The correct answer is neither. Five and four equals nine, not eight.

Part 10. The correct answer is none. Moses didn't bring any animals onto the ark, it was Noah.

Now, here's another Idiots test and if you wanna do the test, go to this link:
http://www.addictinggames.com/theidiottest.html