Russia itself is a very spacious territory occupying one-tenth of all the land on Earth. A large part of this is owing to the sprawling pine forests of Siberia which occupies three-fourths of Russia. It also occupies a significant volume of water bodies particularly Lake Baikal which holds more water than any other like on Earth. Because of this, it holds the record of being the world's deepest lake.
The answer is letter D.
