Correct Answer: Bio remediation

Solution : The correct option is Bioremediation.

The approach of waste water management that involves the employment of microorganisms to remove or neutralise contaminants from polluted places is known as "bioremediation". Bioremediation uses microorganisms' inherent metabolic activities to break down or change contaminants into less dangerous chemicals, cleaning up damaged surroundings and improving water quality. This method is frequently used to clean up oil spills, industrial effluent, and other types of water contamination.