You are presented with the quiz "Steroids are derivatives of what?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "steroid hormones are made of lipids, such as phospholipids and cholesterol" and "steroids Steroids are lipids and, more specifically, derivatives of cholesterol". 

So, what's the best answer to the question?


 

     cholesterol      