The correct answer is option 4, Amylase. Amylase is an enzyme that is present in all members of the animal kingdom except Protozoa. Amylase is responsible for breaking down carbohydrates, specifically starch, into smaller sugars. It is produced in the salivary glands, pancreas, and small intestine. This enzyme plays a crucial role in the digestion and absorption of carbohydrates in animals. Insulin, option 1, is a hormone produced by the pancreas and is not an enzyme. Pepsin, option 2, is an enzyme that breaks down proteins and is found in the stomach. Renin, option 3, is an enzyme that is involved in the production of a hormone called angiotensin, and it is mainly found in the kidneys.