Fact 1: Steroid hormones are made of lipids, such as phospholipids and cholesterol.

Fact 2: Fats are known as lipids.

Given the two facts above, answer the question "What are steroid hormones made of?" with the following options: 
- bacteria
 - fats
 - sugar
 - muscle
 - H 2 O
 - sunlight
 - the Sun
 - SO2


 

  fats       