Q3: Most of the present-day population of Arizona and the Southwest resides in the:

a. Colorado Plateau.

b. Transition Zone.

c. Southern Rocky Mountains.

d. Southern Basin and Range and Río Grande Rift.

a. Colorado Plateau

Explanation:

It is home to a population of 2.1 million, who live in this region, the climate of this place is considered as semi-arid and total precipitation of 250 mm. Since prehistoric times this place is home to the little ice age settlers of 18 century. Similarly, other human activities such as grazing and livestock raising and the country have a good deer population. There has been a 13.24% increase in population since 2010, and the country capital Denver is estimated to be more than 35 lakh people. 81% white people, 20.7% Latin American and others 4% black people. Colorado has large African American communities and neighboring areas. The majority of the religion is Christian about 64%, 44% protestant, and 16% roman and 3% catholic. The economy is mostly dependent on agriculture.