Final answer:
Option C) is correct answer. Pepsin is not a component of saliva. Saliva contains various components such as amylase, mucus, and lysozyme that aid in digestion.
Step-by-step explanation:
The correct answer is (c) pepsin. Pepsin is not a component of saliva. Saliva is a fluid secreted by the salivary glands and it contains various components that aid in digestion. Some of the components of saliva include amylase, which breaks down carbohydrates, mucus that lubricates food, lysozyme which is antimicrobial, and water. Pepsin, on the other hand, is an enzyme that is produced in the stomach and helps in the digestion of proteins, not in saliva.