Final answer:
The true statement about Eastern Russia is that it is very large in terms of surface area. This region has a harsh climate and is not densely populated, but is rich in natural resources.
Step-by-step explanation:
The correct answer to the question Which of the following is true of Eastern Russia? is c. The region is very large in terms of surface area. Eastern Russia, specifically Siberia, is enormous and rich in natural resources such as oil, gas, and precious metals, despite its harsh climates and sparse population. While the rest of Russia, particularly the western part around Moscow, is more populous and economically developed, Eastern Russia's vast spaces remain relatively underpopulated