I think its A  but it has been a while since i did this.
        
                    
             
        
        
        
I would go with B, because that is what basically would move fluid in our body. Nothing else, because our heart is like a pumper, that always pumps blood through your whole body. Unless until you die, and then it stops.
Hope that this would help you!
        
             
        
        
        
Answer:
Explanation:
Ummm by losing 75% I'm sure you're a vegetable :-)
 
        
                    
             
        
        
        
Yes, rocks are valuable because they are part of earths crust
        
             
        
        
        
The best answer to the question states above is letter C.<span> A short observation period.
</span>
<span> A scientist's primary concern in a clinical trial is the patient's safety, there fore short observation </span><span>decreases the reliability of results from a clinical trial</span>