Hello!
(I am doing C by the way)
The first native Americans came to america through Asia and traveled here through a ice bridge that has melted now. They traveled to America because food called "big game" had run scares in Asia. In order to survive they had to follow the last of the animals. When they had settled in America during the ice age, the ice bridge began to melt and they were trapped in America. Native Americans or Indians got their name by Christopher Columbus by thinking he had traveled into India by sailing west, fortunately America wasn't explored yet. So when he landed in the Caribbeans he thought he landed in India and therefor called them Indians.
Hope it helps!
Brainliest is always appreciated!