What Was the Primary Feature of Numic-Speaking Peoples That Allowed

What was the primary feature of Numic-speaking peoples that allowed them to be more successful in the Great Basin than the Fremont culture?

A) advanced hunting strategies that allowed them to take down large-game animals
B) a hunter-gatherer adaptation that was better suited to the Great Basin around the time of the Medieval Maximum
C) a natural resistance to the strain of smallpox that wiped out the Fremont people
D) language and religious practices that helped form a large trade network in the region