I have no idea, but I wouldn't use Wikipedia.. The "facts" on there aren't always true. That's why we aren't allowed to use it in my high school.
We can reject answers C) and D) :those are two famous cities in Russia, and cities would be too small to take up three-forths of Russia, the biggest country in the world.
Murmansk is also a city: in the North-West of Russia, in the Arctic Circle.
So the correct answer is: Siberia
They provided silk
Hope this helped
Answer:
Việt Nam có 58 tỉnh và 5 thành phố trọng điểm là Hà Nội, Thành phố Hồ Chí Minh, Cần Thơ, Đà Nẵng và Hải Phòng.