Although Los Angeles is famous for its air pollution and smog, there are many parts of LA where the air is quite nice, especially in the mountains and by the sea. However, the people who live in these places are disproportionately white, while the people who live in the places with the worst air quality are disproportionately likely to be racial and ethnic minorities. This is an example of:
A. conservation.
B. sustainable development.
C. environmental racism.
D. environmental justice.
E. grassroots organizing.