Which of the following may be classified as a lipid?

Lipids are a subclass of fats. One of the primary macronutrients is them. Fatty acids, a class of long-chain organic acids, are the building blocks of the diverse group of substances known as fats. More specifically, fats are esters of these organic acids created with glycerol, an alcohol. In the body, lipase enzymes made in the pancreas break down fats and other lipids.