The best way to help a city as its population grows, and its air becomes more polluted, is to invest in alternative energy sources to reduce emissions. The correct option is B.
What is pollution?
Pollutants are the name for these dangerous substances. Natural pollutants include volcanic ash, for example. They can also be brought by human activities, such as factory runoff or waste.
Air pollution is caused by solid, liquid, and gaseous pollutants. These gases and particles can be produced by factories, volcanoes, wildfires, dust, pollen, and vehicle and truck emissions.
To stop pollution, we must use alternative energies that do not cause pollution.
Thus, the correct option is B. Invest in alternative energy sources to reduce emissions.
To learn more about pollution, refer to the below link:
https://brainly.com/question/15708835
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