The answer is Federation of state medical boards
        
                    
             
        
        
        
False<span>               The </span>mass of an object is a measure of the amount of matter in the object.     Weight<span> is a measure of the force on the object caused by a gravitational field.</span>.
        
             
        
        
        
D is the answer :D hope that helps. i may not be 100 percent right but ive been told that is the best thing to do
        
                    
             
        
        
        
Symtoms: - They might lose balance and unable to do properly.
                 - They can't focus on what they are doing.
                 - If they have pain all over head, they have a headache