Final answer:
Rocky Mountain Bighorn Sheep migrate to areas where food is available as a behavioral adaptation to high elevations, which is a learned behavior crucial for survival.
Step-by-step explanation:
The behavior of Rocky Mountain Bighorn Sheep living at high elevations that is a result of such an environment is C. They migrate to areas where food is available. Migration is a behavioral adaptation that many animals, including elk and bighorn sheep, display as a response to seasonal changes in their habitat. These migrations often occur when food becomes scarce in their current location, and they must move to areas with more abundant food resources. This adaptation is crucial for survival and is learned behavior that can be taught to younger generations, as seen in the early generations of some species. Additionally, such behavioral changes are often correlated with physiological changes that enable the animals to survive the different conditions they encounter during migration.