C. Central Asia has high mountain passes and vast grasslands, which are ideal for herding.
Explanation:
"Nomadic pastoralism" refers to the activity of bringing one's livestock to an ideal area where they can graze on grasslands. This is <em>"nomadic" </em>in a sense that there's<em> no stable area for herding the livestock</em>.
The<em> pasture area</em> of Central Asia is<u> vast</u> and it makes it truly ideal for nomadic pastoralism. Its <em>high mountain passes </em>allow people to travel from one point to another. It gives them a route to follow. This is the reason why many people in this area herd livestock as a means of livelihood.
