The correct response is:
Public goods are goods and services that are non-excludable and non-rivalrous; therefore, it is not profitable or in the best interest of private businesses to provide these goods.
This statement accurately describes why the government often needs to intervene in the provision of public goods. Since these goods cannot be restricted to specific users and one person's use does not reduce availability for others, businesses are unlikely to provide them, as they cannot easily charge consumers and generate profit. Thus, government involvement ensures these essential services are available to all.