the question will be on file please

7. Market failure associated with public goods Sean was willing to contribute $50 this year to his local college radio station. However, after learning that the radio station had already met its goal of raising $500,000, he decides not to contribute, because he knows he can listen to it without contributing. This is an example of which of the following? 0 An external cost 0 A deadweight loss 0 An opportunity cost 0 The free-rider