Vermi-composting is a natural method of

The correct answer is: A. Producing compost manure.

Vermi-composting is a process of using worms to convert organic waste into a valuable soil amendment known as worm castings or vermicast. Worm castings are rich in nutrients and beneficial microorganisms that can improve soil structure and fertility. They are also a safe and effective way to manage organic waste.

Option B is incorrect because vermic-composting does not produce worms. In fact, it requires worms to be successful.

Option C is incorrect because vermic-composting is