Which option best connects geography to the economic activity of the desert and steppe regions?

A. Farmers used irrigation to provide water and staged controlled burning of the grasslands to provide fertile soil for farming.

B. Agriculture was difficult because of the poor soils; farmers grew tree crops such as kola and palm trees.

C.These areas did not receive enough water for farming, but nomadic herders could move their herds of goats, sheep, or cattle from place to place in search of water and food.

D. All of the above

Farmers in both the steppe and desert regions use irrigation to water their crops. They sometimes build canals to divert water from water bodies for irrigation.

Agriculture is very difficult in both areas as soils are poor. Famers therefore have to plant more drought resistant crops like palm trees.

Another economic activity in both areas is that of the nomadic herders who move herds of livestock around to feed for example the Fulani people of West Africa.