Umm Flicker your wrist as your side arm moves ... Just think of it as you playing catch with a Frisbee. 
You'll need to stick your thumb out, thumbs up style, and make a peace sign with your index and middle finger, making sure your palm is facing the sky. These are the three fingers you'll need....
        
             
        
        
        
<em>The function of the excretory system is </em><em>to remove waste from the body, or any unnecessary materials not kept by storage functions. It is important because it helps maintain homeostasis within organisms</em>
<em>Organs that this system includes are </em><em>the skin, the kidneys, the large intestines, the liver, and the lungs.</em>
 
        
                    
             
        
        
        
Answer:
I am pretty sure it is D
Explanation:
Behaviorists explain how certain outside things can affect someone's behavior.