Which is the Correct Series of Events in the Evolution

Question

Which is the correct series of events in the evolution of life on Earth?
A) O2-photosynthesis -aerobic metabolism
B) Photosynthesis -O2-aerobic metabolism
C) O2-aerobic metabolism -photosynthesis
D) Aerobic metabolism -photosynthesis -O2

Accepted Answer

Photosynthesis led to the production of O₂, which then allowed for aerobic metabolism to evolve.