Scott and his family recently moved to a large city, where the air sometimes looks hazy from smog. These four steps could result in the formation of this smog: Ozone forms.
Polluting gases react with sunlight.
Temperature inversion traps pollution.
Cars emit hydrocarbons and nitrogen oxides.

Which answer shows the order in which these steps occur?

A. 1, 2, 3, 4
B. 1, 2, 4, 3
C. 4, 1, 2, 3,
D. 4, 2, 1, 3