If you want the real poop on fork etiquette, you need to include more options in the poll because it depends on whether you have a knife or not.
- The "official" original manners on fork use is that you use it tines-down in the non-dominant hand if the knife is in the dominant hand.
- If the fork is used by itself without a knife then it's supposed to be tines-down in the dominant hand.
- If you need to "scoop" food, then technically you are supposed to use a spoon, but in "casual" situations (most situations nowadays) it's considered okay to use a fork tines-up (again in the dominant hand) as a sort of spoon surrogate but never, ever scoop food onto the fork with your fingers.
WIN
Honestly, these uncultured yanks, no clue
The clue is usually in how the table's set! (Not that we do all that at home, but in restaurants etc)
Oh, and
never, ever scoop food onto the fork with your fingers.
I'm always doing that