A problem facing all people living in Mexico City is

A.
increased pollution.

B.
having only a few farms.

C.
a lack of education.

D.
no place to buy food.

And your answer is?

I think it's A.

Thank you!

The correct answer is A. increased pollution.

Mexico City faces a significant problem of increased pollution. To arrive at this answer, you can eliminate the other options by using logic and general knowledge.

Option B, having only a few farms, is inaccurate because Mexico City is not known for its agricultural production, but this does not necessarily mean there are only a few farms. Option C, a lack of education, is a common problem in many parts of the world, not specific to Mexico City. Option D, no place to buy food, is also incorrect, as Mexico City is a densely populated urban area with numerous markets, grocery stores, and food establishments.

To confirm the correct answer, you can also rely on context and information about Mexico City. It is widely reported and acknowledged that Mexico City struggles with severe air pollution due to factors such as high population density, vehicle emissions, industrial activities, and geographical location in a natural basin, surrounded by mountains that trap pollutants.