The answer is the first one because it doesn't create gases and, the third one doesn't even make any sense so its definitely not that one 
        
                    
             
        
        
        
Answer:
c 
Explanation:
it would cause harm to the bay. therefore NOT protecting it 
 
        
                    
             
        
        
        
Answer:
During the Krebs cycle, pyruvic acid is broken down into carbon dioxide in a series of reactions that give off energy. The high-energy electrons that are produced are picked up by a series of electron carriers, and the energy is used to convert ADP into ATP.
Explanation: