Migrating mid-latitude anticyclones typically 1) move easterly driven by the prevailing westerlies. 2) move westerly driven by the prevailing westerlies. 3) move easterly driven by the prevailing easterlies. 4) move westerly driven by the prevailing easterlies

Migrating "mid-latitude anticyclones" typically move "easterly driven" by the "prevailing westerlies".

Explanation:

Given the fact that the anticyclones move in a "clockwise direction" in the "northern hemisphere" and in the counterclockwise direction in the southern hemisphere, it has to be none other than the westerlies coupled with the "Coriolis effect" in both the hemispheres that move these anticyclones. The anticyclones are dominant in the Horse latitudes and carry dry airs. They are majorly responsible for the formation of the world's biggest deserts.

Humans increased food production by farming.