While Studying the Yanomamö, Napoleon Chagnon Found That Soil Depletion

While studying the Yanomamö, Napoleon Chagnon found that soil depletion was not the only reason that they moved their garden plots. What other reason did he find?

A) Major population movements of the Yanomamö were due to warfare and conflict with neighbors.
B) The Yanomamö simply got tired of living in the same area and moved.
C) The Yanomamö had developed a 25-year plan that detailed their moves from year to year.
D) These cleared plots eventually became shallow ponds that could no longer be used as gardens.