Answer:
Lysozyme.
Step-by-step explanation:
The saliva is produced by the salivary glands in the organism. The main component of saliva are mucin, salivary amylase, salts, lysozyme and mucin.
The lysozyme enzyme of the saliva provides a defensive role against the microorganisms. The lysozyme kills the harmful microorganism and also makes the environment unfavorable for the growth of the organism.
Thus, the correct answer is option (c).