The answer is pollution. Negative externality happens when the utilization or production of a good cause or purpose brings harmful effects to a third party. In this case, governments should intervene in the marketplace to make companies and or individuals accountable for this kind of unintended consequences.
The answer would be Pollution. Pollution is an example of a negative externality, which refer to various factors that resulted from company's productivity. One of the common example of this is the air pollution , which will bring harm to the environment