Which of the following is not a challenge that Russia must overcome in developing its resources?

Question

extracting resources from remote and rugged locations

preserving the fragile natural environment

eliminating trade barriers between Soviet republics

OR

building means to transport resources to industrial centers

help please!!!!

Answer 1

Trade barriers aren't that big in developing it, since you can develop but not sell them.

Answer 2

the first and last (extracting resources and transporting them) are definitely major problems because of the vast expanse of mountains that makes up most of Russia. also, there are very few trade barriers between soviet republics already. Russia doesn't worry much about protecting its environmet, so the answer is

preserving the fragile natural environment