*Public goods* possess two primary characteristics: *non-excludability*, where preventing use is not feasible, and *non-rivalry*, where one individual's consumption does not reduce its availability for others.
Hence, the correct answer is (b).
List-I(Works) | List-II(Authors) | ||
|---|---|---|---|
| A | Theory of Moral Sentiments | I | J.M. Keynes |
| B | Theories of Surplus Value | II | J.S. Mill |
| C | General Theory | III | Adam Smith |
| D | On Liberty | IV | Karl Marx |