The carpals belong to appendicular skeletal system
        
                    
             
        
        
        
Hydrocarbons. (organic compounds entirely made up of hydrogen and oxygen)
        
             
        
        
        
I pick c. because I really can't see the screen very well.
        
                    
             
        
        
        
<span>The mirror is used to focus light  through the opening in the  in the  stage of the microscope.</span>