Respuesta :
In Houston, the air quality in 2019 became worst due to ozone pollution. Houston trying to combat increasing ozone pollution by encouraging mass transit use.
What is ozone pollution?
Emission of hydrocarbons and nitrogen oxide in the air due to vehicles causes ozone pollution.
It is actually a secondary pollutant which is produced by reaction between primary pollutant in sunlight and stagnant air.
In the given passage, Houston is trying to cope-up with the increasing ozone pollution by encouraging use of mass transit.
Thus, the correct option is C.
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https://brainly.com/question/9185791