Steven Cheung examined the relationship between beekeepers and apple growers. Cheung noted that: "Pollination contracts usually include stipulations regarding the number and strength of...[bee] colonies, the rental fee per hive, the time of delivery...the protection of bees from pesticides, and the strategic placing of hives." Cheung's suggests that the relationship between beekeepers and apple growers is an example of...
a.the Coase Theoremb.how excessive legal costs can prevent economic efficiency from being achievedc.government intervention improving economic efficiencyd.negative externalities

Based on the information provided it seems that Cheung suggests that the relationship between beekeepers and apple growers is an example of the Coase Theorem. This basically states that two individuals can come to a mutually beneficial outcome by bargaining or negotiating terms. Which in this scenario both the beekepers and applegrowers need something different from the bee's and need to negotiate in order to come to an understanding.