Which of the following options BEST describes the conditions present in the origins of planet Earth?
The oceans of early Earth contained complex organic molecules that formed simple inorganic molecules over time.

Earth's early atmosphere contained oxygen but no ozone and high amounts of UV radiation.

Before cyanobacteria, Earth's early atmosphere had high amounts of UV radiation, no ozone layer and no oxygen.

Protists were the first organisms that evolved and provided oxygen for the atmosphere.