The statement that best completes the diagram to show how the shift away from nomadic lifestyles affected Indigenous groups is that settlements made up of family groups form.
Basically, the nomad are people with no settled home, moving from place to place as a way of obtaining food, finding pasture for livestock while making a living.
Majority of nomadic groups follow a fixed annual or seasonal pattern of movements and settlements. They also traditionally travel by animal, canoe or on foot.
Therefore, Option A is right.
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