The answer to your question is Letter C   <-- ANSWER 
Steroid is a molecule made up of four carbon rings with other atoms bonded to those rings. 
Hope this Helps 
 
        
                    
             
        
        
        
Answer:
A hill is a part of land that rises higher then everything surrounding it its like a little bump in the earth. Mountains have less steep and not as high but a hill will usually have and obvious summit which is its highest point 
 
        
                    
             
        
        
        
<span>He tried to combine the disease resistance of one plant with the food-producing capacity of another.
</span>