Earth's Ozone Layer Is Extremely Important Because It

Earth's ozone layer is extremely important because it

A) blocks incoming UV radiation, which is damaging to animals and reduces photosynthesis in plants and algae.
B) maintains high carbon dioxide concentrations so that photosynthesis can occur.
C) traps harmful infrared rays.
D) traps heat so that Earth's temperature does not fall too much.
E) blocks incoming visible light to protect Earth against the greenhouse effect.