Answer: the buffalo would become a vital resource for the American Indians in the plains.
Explanation:
From the information given in the question, we are informed that the Indians stopped farming as the work was hard, boring, and unrewarding, compared to the nomadic life. This means that the Indians preferred the nomadic life.
Therefore, the changes to the lives of North American Indians will be that the buffalo would become a vital resource for the American Indians in the plains.
Based on this, there'll be increase in the buffalo and wild cattles. Therefore option C is incorrect. American Indians never abandoned farming across North America.
Therefore, the correct option is B.