Christianity
Reason: this world is so messed up, a devil obviously exists. Given that this devil seems hellbent on getting everyone to believe in anything but the Christian faith, it's probably the biblical Satan. I mean look at the LGBT argument. So many ppl hate Christians for LGBT intolerance, but several Muslims will make Christians look nice compared to what they do (most of their countries will k wodr people for even being gay), and yet the world doesn't treat Muslims the same way even though everything they hate about Christians is worse with Muslims. This makes me think Satan is obviously real, and if Satan is obviously real, it means God must be real, otherwise we'd all probably be dead