What factor negatively affected open range cattle ranching? A. The number of cowboys dropped due to low pay. B. The price of beef dropped due to oversupply. C. Attacks by Native Americans made open range ranching too risky. D. Heavy rains and flooding wiped out many major ranches.

Option: B. The price of beef dropped due to oversupply.

Explanation:

The majority of the West turned into ranching because of the geographical condition. Ranching became possible because of cowboys who helped in herded cattle, took care of the horses and repaired fences and buildings. As the ranching began to thrive, it started to have its negative impact. The railroad helped beef to supply in the East to a larger extent.  All this also led the prices of meat to drop.    

the answer is richard nixion