The correct answer is B) They followed animals and found a good place to live.
People migrated from Asia to the Americas because they followed animals and found a good place to live.
Historians and archeologist think that after the last ice age, a natural frozen bridge allowed people from Asia to cross to America through the Bering Strait. The strait separates Russia from Alaska by 58 miles. Because the territory was frozen, humans in that time could follow animal herds to hunt them and feed their families.