Answer:
Public goods.
Step-by-step explanation:
Public goods are described as the goods or service that are non-competitive or non-excludable in nature which implies that individuals cannot be prevented from using it. These goods primarily involves the public parks, air we breathe in, national defense, etc. These goods are characterized by its social and collective ability which implies that an individual's consumption would not reduce or affect its availability for the others. Thus, 'public goods' is the correct answer.