The answer is;  A
This model hypothesizes how life started during the early conditions of the earth which were hot and filled with greenhouse gases in its atmosphere about 4 billion years ago. It is explained by the theory of spontaneous generation where organic molecules were created from inorganic molecules spurred from energy from lightning. These organic molecules filled the water bodies and chemically arranged themselves, over time, into primordial life. 
 
        
             
        
        
        
Answer:
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Explanation:
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Photosynthesis, because the equation is using light energy and producing oxygen, like a plant, which use photosynthesis to make food.