What Is Transhumance

What is transhumance?

A) agriculture in dry areas, made possible by irrigation
B) agriculture that relies on evapotranspiration
C) the movement of humans from transition zones of agriculture to more inhabitable lowlands
D) the movement of livestock from urban regions to rural areas where more grass is available for animal consumption
E) seasonal movement of livestock to cooler, greener high-country pastures in the summer and returning them to lowland valleys during the winter