I was under the impression that Islam is the world's largest religion.

Other than that, I thought most of the questions were far too easy. Particularly the geography ones. Half of the available choices weren't even on the correct continent for most of the questions.

Case in point, Argentina. 27% of those surveyed in the US got it right.

If this survey was conducted in the same manner as this test, just guessing would have given you 25% correct.

Narrowing it down to the correct continent would have given you 50% correct.