Which example is considered a public good?
A)school attendance
B)national defense
C)cigarettes
D)a flu shot

Question

Quizplus · Accepted Answer

Public goods are non-excludable and non-rivalrous. National defense is non-excludable because everyone benefits from it regardless of whether they paid for it or not, and it is non-rivalrous because the consumption of one person does not diminish the consumption of another. School attendance is not a public good because it is excludable (only those who pay tuition or meet certain requirements can attend) and rivalrous (one student's attendance can prevent another student from attending). Cigarettes are a private good because they are excludable and rivalrous, and a flu shot is a quasi-public good because it is excludable but non-rivalrous (one person's vaccination does not diminish the effectiveness of another person's vaccination).

Which Example Is Considered a Public Good