Which of the following is a public good?
A) Air traffic control.
B) National defense.
C) Clean air.
D) All of the above.

Question

Quizplus · Accepted Answer

All three options mentioned in the question - air traffic control, national defense, and clean air - are examples of public goods. Public goods are goods or services that are non-excludable and non-rival, meaning that they are available to everyone and one person's use of the good or service does not diminish its availability to others. This is why they are typically provided by the government or a public agency rather than by private businesses.

Which of the Following Is a Public Good