The correct options are
A Industrial effluents into the water bodies
B Dumping of plastic bags into the water bodies
C Oil spills in the seas or oceans
Water pollution is the contamination of the water bodies. It is usually caused as a result of human activities like releasing industrial effluents into water bodies without treatment, oil spill from ships, throwing plastic bottles or bags into water, etc. However, excessive growth of aquatic life do not pollute the water bodies.