Which of the Following Was a Reason for Most of the Decimation

Multiple Choice

Which of the following was a reason for most of the decimation of the bison in the United States during the 1890s?

A) The construction of railroads through the Great Plains
B) The prevalence of the black plague in areas populated by Indians
C) A sudden increase in the number of natural predators in the area
D) The pollution of bodies of water by toxic waste from industries
E) Starvation due to widespread drought in areas populated by Indians