Which of these geographical factors is most likely the biggest hindrance on russia's economy?
a) permafrost over much of siberia
eliminate
b) russia's proximity to the bering sea
c) large deposits of oil and natural gas
d) russia being the largest country in the world

The answer is letter A.

Russia is one of the biggest countries on Earth. Most of its areas are covered in permafrost that have developed through the past ice ages and extreme weather that the Earth has experienced. Underneath the permafrost are large deposits of oil and natural gas that are in bigger amounts compared to the ones in the Middle East. There is no technology well capable of cutting through the permafrost and the extreme weather is hard to overcome that's why it is the biggest hindrance to Russia's economy up to present.