What factor most likely determined how often a nomadic group moved? the lack of geographical protectionthe lack of close proximity to a river or lakethe group's boredom with the surroundingsdwindling food supplies

dwindling food supplies

Explanation:

Nomadism is a form of life that was present in human groups, especially before the Agricultural Revolution. It is a human practice of groups that, instead of living fixed in one place, scatter around the territory looking for food. Their walk revolves around the natural resources available: when they were depleted, they moved to other places. Between 1 million years and 10,000 years, humanity lived in a nomadic way. According to this reasoning, we can say that the correct answer to your question is "dwindling food supplies".

the answer is b: the religion they practice.

here's why:

there were many different native american tribes and those with similar characteristics formed a main tribe or nation. each had its own language, religion and customs.

i am sure the answer is d