Options: 1). bacteria. 2). fats. 3). sugar. 4). muscle. 5). H 2 O. 6). sunlight. 7). the Sun. 8). SO2.
Given those answer options, answer the question: 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, what are steroid hormones made of?
A:
2).