Which of the following scenarios best explains the concept of the tragedy of the commons?

Factory polutes river as much as the law allows.

Explanation:

Tragedy of the commons is a situation in the shared-resources system where agends, acting in accordance with their self-interest, behave contrary to the common good of all users. Commons are considered to be any shared resources such as atmosphere, rivers, roads, highways, which are unregulated. For a sustainable development, and surivival of the environment, river as the common good should avoid to be the subject of the tragedy of the commons, by not allowing factories to polute them at all. Instead, the law regulation should focus on making the factories become socially aware and to work towards sustainability.