Enriquez plans to research the topic of alr pollution. based on the topic, what is the strongest research question?

a. why is it important for people to understand air pollution?

b. what percentage of americans think that the effects of air pollution are significant?

c. why should people care about the effects of alr pollution on the environment they live in today?

d. why is it important to know the effects of air pollution on people living in various cities all over the world?

e. what is the most significant effect of air pollution on the lives of people living in the city versus the country?