Answer :
Most of the oxygen that exists in the ocean comes from phytoplankton that live near the surface of the ocean and are moved about by the ocean currents. Phytoplankton is a type of naturally occurring algae which would mean that the answer to this question is C "algal growth."
The correct option is C. Algal growth.
What is the main source of dissolved oxygen in water?
Oxygen dissolves into the water from two sources: the atmosphere and plants in the water. The primary source of oxygen for a pond is from microscopic algae (phytoplankton) or submerged plants. In the presence of sunlight, these produce oxygen through photosynthesis and release this oxygen into the pond water.
Learn more about algal growth here https://brainly.com/question/9877858
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