OK! so i just did this question not too long ago after studying it my answer was "C"
Answer:
Arid deserts, red rock formations and rugged mountain and natural wonders like the Grand Canyon. It is uniquely diverse.
Explanation:
The end of the Ice Age meant that there was going to be much more water than land. That flooded the ways of transport that Early People had, the result was that it as even more difficult finding food and shelter.
Have a nice day! :)
Guinness says that Operation Overload in World War II was the greatest but each teacher probably has a different answer