The Arabian Peninsula has a hot and dry climate with a vast desert area, mostly tropical desert climate, less precipitation and high temperature. In order to cool down at night, people often arrange beds on the roof, so it is impossible for local people to go shopping by sleigh. The Dead Sea has high salinity and high buoyancy, so you can swim in the Dead Sea without lifebuoy. Mongolia belongs to temperate continental climate, with scarce precipitation and developed animal husbandry.

So choose: a.