HELP PLEASE !! How does geography play a role in Mexico City’s air pollution problem?

A. The number of cars has increased in the last ten years.
B. It is one of the world’s most populated cities.
C. The passing of NAFTA has allowed for more factories to be built in Mexico.
D. It lies in a valley, surrounded by mountains, that traps in air pollutants over the city.

The answer is D

Explanation:

Being in a valley results in air pollution being contained to an area.

The answer is D

Explanation:

it is built in a crater of an extinct volcano since it as at a high elevation air is thin and the exhaust from cars and factories get trapped in the valley.

an economic reason that the south needed a reconstruction plan is that plantations, factories, and other businesses were destroyed during the war.

its b wells tried to fight lynching in the south by