Question 9 ( 0.5 points) What is the geographical significance of the Russian Plain? The Russian Plain is the most populated region of Russia. The Russian Plain is the largest mountain-free area of Russia. The Russian Plain contains the highest point above sea level in Russia.

To determine the geographical significance of the Russian Plain, let's analyze the provided statements: 1. **The Russian Plain is the most populated region of Russia.** - This statement is true. The Russian Plain, particularly the area around Moscow and other major cities, is indeed the most densely populated region in Russia. 2. **The Russian Plain is the largest mountain-free area of Russia.** - This statement is also true. The Russian Plain is characterized by its flat terrain and is one of the largest areas without significant mountain ranges. 3. **The Russian Plain contains the highest point above sea level in Russia.** - This statement is false. The highest point in Russia is not located in the Russian Plain but rather in the Caucasus Mountains, specifically Mount Elbrus. Based on this analysis, the most accurate statements regarding the geographical significance of the Russian Plain are the first two. However, the first statement about it being the most populated region is particularly significant in understanding its importance in terms of human geography.