The correct answer is C. Much of the region is covered by desert and lacks fresh water.
Southwest Asia face great difficult in farming mostly because of climate and soil conditions.
The Southwest Asia is extremely arid and will receive less than 18 inches of precipitation a year, while countries as Brazil in the region of Amazon rainforest will receive 80 to 120 inches of annual precipitation.
The Southwest land is also covered with sand dunes or salt flats. These regions are very dry and make irrigation very hard. Because of this characteristics rivers will not flow the entire year, requiring then the use of other methods for irrigation in farming.
Farming is difficult in much of Southwest Asia as much of the region is covered by desert and lacks fresh water.
Southwest Asia is mostly surrounded by sand dunes or salt flats as well as water bodies of the sea. This makes irrigation in farming a difficult task due to harsh weather conditions.
Therefore, with lack of appropriate natural resources such as freshwater is making the population live in typical situations.
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