The correct answer is: More people live along the rivers than in the mountains and deserts.
In the north of India we can see an area with high population density along the Ganges River, and in the northeast of China we can see a great area with high population density in the region of the Young Tse river. We can see a lot of high population density along all the coasts of India, Southern Asia and China, Korea and Japan.
Most of people live along all the coasts and fertile plains bathed by great rivers and their tributaries. In the deserts and mountains in general we can see very low population density in the map.