Photosynthesis Is the Primary Chemical Reaction That Creates the Oxygen

Multiple Choice

Photosynthesis is the primary chemical reaction that creates the oxygen found on the earth.Some prokaryotic organisms and some eukaryotic organisms can produce oxygen through photosynthesis.While all eukaryotic cells and many prokaryotic cells also require oxygen,there are many prokaryotic cells that do not.What then created the oxygen in the earth's atmosphere that allowed the earliest eukaryotic organisms to evolve?

A) Volcanoes
B) Photosynthetic plants
C) Photosynthetic algae
D) Photosynthetic bacteria