The process of converting solid waste into organic fertilizer by using microorganisms such as bacteria and fungi is called

Composting turns solid waste into organic fertiliser using bacteria and fungi.

Disposal merely removes waste and does not create fertiliser.

Remediation cleans contaminated sites rather than producing manure.

Dismissing all choices is wrong because this microbial process is composting.

The microbes decompose organic matter into a stable, humus-rich product.

Finished compost returns nutrients and improves soil health.