Opossums prefer road kill or insects. It is more likely that it is a vole eating your hosta.
Grasshoppers will eat hosta.
Yes woodchucks do eat hosta but there are worse hosta killers.
You can spray your hosta with a pepper spray.
Bears generally will not eat hosta. They prefer higher calorie plants like berries.
Possums eat all types of fruit.
No. Possums do not eat fish.
Yes, possums (which are not the same as opossums) do eat apples.
Tasmanian devils eat possums
The ducks may be eating the snails on your hosta.
You can use cayenne pepper on the leaves and gravel in the ground to protect the hosta.
no
Possums are unlikeky to eat green tomatoes. They like ripe, sweet fruits.