This document discusses the characteristics of a public good and asks which of four options bears the least resemblance. A public good is non-rivalrous, meaning one person's use does not reduce availability to others, and non-excludable, so no one can be prevented from using it. National defense, sewer systems, and public parks are given as examples. The document concludes an outdoor concert bears the least resemblance since it is rivalrous and excludable.

1. Of the four goods listed below, which bears the least resemblance to a pure public good? A. A
radio broadcast B. An outdoor concert C. A recital D. A record album
Solution
A product that one individual can consume without reducing its availability to another individual
and from which no one is excluded. Economists refer to public goods as "non-rivalrous" and
"non-excludable". National defense, sewer systems, public parks and basic television and radio
broadcasts could all be considered public goods.
So according to above defenition least resemblance is an outdoor concert