A. Russia is not only famous for its historical and cultural landmarks but for its geological and natural landscapes too. These sights are scattered across Russia, and you may find them in different regions of the country. Such landmarks vary: from wonderful lakes to high mountains and waterfalls. They are all worth visiting. Here are only some of the most impressive and wonderful Russian natural landmarks everyone should know about.
This text describes various types of landmarks in Russia. Therefore, the correct theme is 2.
Answer: 2. types of Russia's landmarks