On holiday weekends thousands of people picnic in state parks. some picnic areas become so overcrowded the benefit or value of picnicking diminishes to zero. suppose that the minnesota state park service institutes a variable fee structure. on weekdays when the picnic areas get little use, the fee is zero. on normal weekends, the fee is $8 per person. on holiday weekends, the fee is $14 per person. the fee system corrects a problem known as the a. tragedy of the commons. b. free rider problem. c. public goods problem. d. coase theorem.