Final answer:
The external opportunity cost of a successful biking company in a community can include increased traffic congestion, reduced pollution, job creation, and strain on local parking facilities.
Step-by-step explanation:
The external opportunity cost of a successful biking company in a community could be a) Increased traffic congestion due to more bikers, b) Reduced pollution from fewer car emissions, c) Job creation and economic growth, and d) Strain on local parking facilities. Each of these factors represents a trade-off or cost that is associated with the company's success.
Increased traffic congestion can be a result of more bikers on the road, which can lead to longer commute times and inconvenience for other commuters. Reduced pollution is a positive externality of the biking company's success, as fewer cars on the road means lower emissions and improved air quality. Job creation and economic growth are also potential benefits of the company's success, as they can contribute to the local economy and provide employment opportunities. However, strain on local parking facilities may arise if there is a lack of adequate parking space for the increased number of bikers.