Question

What factor most likely determined how often a nomadic group moved?

the lack of geographical protection
the lack of close proximity to a river or lake
the group’s boredom with the surroundings
dwindling food supplies

Answer 1

dwindling food supplies

Nomadic groups moved primarily to follow food resources (wild game, pasture for herds, seasonal plants). When local food or grazing ran out they relocated to areas with better resources.