Which of the following is a criteria air pollutant as well as a greenhouse gas?

Ground-level ozone is both a criteria air pollutant and a greenhouse gas.

Nitrous oxide is a greenhouse gas but not one of the listed criteria pollutants.

Carbon dioxide is a greenhouse gas yet is not classed as a criteria air pollutant.

Nitrogen dioxide is a criteria pollutant but is not counted as a greenhouse gas here.

Ozone forms near the ground from sunlight acting on other pollutants and also traps heat.

High ground-level ozone harms lungs and damages crops.