Mexico City has long been ranked among the world’s most polluted cities. The Mexican capital lies in a natural bowl surrounded by mountains, which trap air pollution. When pollution reaches critical levels, school and factory hours are changed to avoid exposing people to the worst of the pollution.

Recently, the city has been making a big effort to improve air quality. Vehicles are tested every six months to make sure the exhaust gases are within safe levels. City laws require motorists to leave their cars at home one day a week and use public transportation.

Read the passage carefully. Choose a connection a reader could make between the text and the world.

A.I would love to travel to El Salvador.
B.This reminds me of our town’s pollution problems.
C.This reminds me of a book I read about how schools are built.
D.I understand that it is important to travel around the world.