How did East Asia’s highlands affect human settlement? People were forced to live a nomadic lifestyle due to the rocky terrain and deserts.
People were unable to remain in the highlands during the winter due to the harsh climate.
People were forced to abandon their settlements due to a lack of basic natural resources.
People were unable to survive without the help of people from other regions of ancient China.

A.People were forced to live a nomadic lifestyle due to the rocky terrain and deserts.

Explanation:

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by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.