The correct answer is B. Much of the northern Mexico is covered by hot, arid desert that makes living there very difficult.
Explanation
In the north of Mexico is the Chihuahuan Desert, an arid and hot zone of about 500,000 kmĀ² that makes it one of the largest deserts in America. This desert encompasses part of the Mexican states of Chihuahua, Coahuila, Durango, and Zacatecas. Therefore, this region presents great difficulties for human settlements. So the correct answer is B. Much of the northern Mexico is covered by hot, arid desert that makes living there very difficult.