Option 3--I have spent a good couple of hours researching this, and hope I am correct. site I've looked at that identifies the other two, but I THINK this one may be chickweed, which is safe to eat, and could be used as a poultice. So, I'm going with this one, and hope I've chosen correctly.
I have a KNIFE, a PISTOL WITH 8 ROUNDS OF AMMO, WATER PURIFICATION TABLETS, a PLANT FIELD GUIDE, a NOTE, a FLASHLIGHT, and a BACKUP FOOD SUPPLY. I need to eat again by the end of Day 10.