I dont know what <span> ketogenic or glucogenic is.</span>
        
             
        
        
        
The answer is C. My explanation is that in the sentence, it has the words “will probably,” next to each other, so that means it is not a fact and it is not a 100% for certain that it will/had happen(ed). People may have different feelings/views about it. Also, all of the other sentences are more direct and do not have those words, and they sounds confident. Hope this helps!
        
                    
             
        
        
        
The circulatory system transports the nutrients and oxygen throughout the body, and the excretory system will excrete the waste and the body will start to sweat in response to the heat to maintain homeostasis.
        
                    
             
        
        
        
Answer:
it's 5 
Explanation:
today's atmosphere we enjoy today is radically different from the atmosphere that formed with the earth billions of years ago.
 
        
             
        
        
        
What are your options?
Anyways, I would say evolution