Final answer:
Lysozyme, found in cervical mucus and semen, provides a chemical defense against bacterial infections of the reproductive organs.
Step-by-step explanation:
The correct answer is A) Lysozyme. Enzymes such as lysozyme, found in cervical mucus and semen, are instrumental in providing a chemical defense against bacterial infections of the reproductive organs. Lysozyme is an enzyme that destroys bacteria by digesting their cell walls. It is found in various body fluids, including saliva, sweat, mucus, tears, and breastmilk, and helps in killing pathogens, especially bacteria.