Which of the Following Is a True Statement About the Pre-Columbian

Which of the following is a true statement about the pre-Columbian era?

A) During this era, people primarily followed herds of animals as their livelihood was based on hunting and gathering.
B) People during this era were able to endure in a single location long enough to create complex, hierarchical societies.
C) This was the era that began 15,000 years ago and ended 10,000 years ago.
D) During this era, which began 12, 000 years ago, thousands of young adults from Asia came to North America, crossing Alaska.
E) People during this era were unaware of the possibility of a sedentary existence.