What best explains the population density of the area indicated on the map?
Responses

The land is mountainous and the region has a semiarid steppe climate.
The land is mountainous and the region has a semiarid steppe climate.

The land is mountainous, near rivers, and the region has a cool summer climate.
The land is mountainous, near rivers, and the region has a cool summer climate.

The land is fertile and the area receives very little rainfall.
The land is fertile and the area receives very little rainfall.

The land is flat, near rivers, and the region has a temperate climate.
The land is flat, near rivers, and the region has a temperate climate.
population density map of China