plz answer this i really need to pass and no links or anything or ill report

How has the climate of the Gobi Desert impacted the lifestyle of the people who live in the region?

A.
The people who live in the region are able to farm grain crops.

B.
The people who live in the region move to the area to produce oil.

C.
The people who live in the region practice frequent trade in the great desert.

D.
The people who live in the region have a semi-nomadic lifestyle.