OK CAN YOU ALL ANSWWER THIS FAST LIKE ASAP!!!!!???!?!?!??!?!?!??!??!?1/!?1/!?!?!?

ok question is The...........absorbs ultraviolet light. the dots are where the there options go but only one of those there

OPTIONS
1. CLOUDS
2.Ozone Lyers
3.Air Molecules

Those are the 3 and one of those gose in the dots