The oxygen produced by the chloroplasts passes out the cell by Cellular Respiration. So the answer would be D :) 
        
                    
             
        
        
        
The symbiotic relationship would be commensalism. It’s when one organism benefits and the other organism neither benefits nor is harmed.
        
             
        
        
        
Nitrogen fixation is a process in which nitrogen (N2) in the Earth's atmosphere is converted into ammonia (NH3). Atmospheric nitrogen or molecular dinitrogen (N2) is relatively inert: it does not easily react with other chemicals to form new compounds.
        
             
        
        
        
Answer: inheritance of acquired traits
Explanation: I took the test and aced it so I hope this helped!!