Why aren't human hunters a threat to polar bears anymore?

Its because the Governments of the Arctic States are now regulating such people by  creating laws, restrictions and quotas to polar bear hunting. Some of those are:

-Amount of Polar bears that can be hunted

-Restriction to hunting certain age or gender

-Native people only being allowed to hunt them (excluding Canada) etc

Even capturing has quotas too. Those are:

-Who takes the polar bear

-Amount of Polar bears that can be taken

-The Life they will have while in captivity

i am positive it is c. condensing but i may be wrong