The correct option is C chewing of food and mixing of saliva with the help of tongue and teeth
Mastication is the process of chewing of food and mixing of saliva with the help of tongue and teeth. Saliva is secreted by salivary glands. It contains an enzyme called salivary amylase that converts starch into maltose. Saliva helps in the proper mixing of food with the help of tongue. While teeth breakdown the food into smaller substances. Saliva also contains lysozyme. It is a naturally occurring enzyme that is abundant in the body secretions like tears, saliva, mucous, human milk. It acts as an antimicrobial agent by cleaving the peptidoglycan component of bacterial cell walls resulting in bacterial death.