Market failure associated with public goods A group of university students buys coconuts from a farmers' market. The students consume the meat of the coconuts for food and use the shells to make sculptures. These sculptures are placed in a public park that any student can visit. The park sustains itself through students' donations. Some individuals have no incentive to donate to the park and will, instead, depend on those who do donate. This is an example of which of the followingf?a. The free-rider problemb. A negative externallyc. Efficient allocation of coconutsd. Overuse of coconuts