Maybe "A" because omnipotent means to have unlimited power and when it has its quills sticking up it stays until the predator is out of sight.
It is not "B" because omnipresent means to be common but it isn't so common for a porcupine to be scared because it has its defense toward its predator.
It is not "C" because omnivorous means to feed on food of plants and animal origin but porcupine only eat plants.
Finally, it is probably also "D" because overt means to do something hidden but the porcupine tries to show out its quills to scare of the predator.
So it is either "A" or "D".
