Great Outdoors Company operates a store in downtown Denver that has five departments including a fishing department. If the fishing department is closed, the store manager's position will not be affected, but if the entire store is closed, the manager will be terminated. Which of the following lessons should be learned from this example?
1) Opportunity costs are always present.
2) Sunk costs cannot be avoided.
3) Relevance of costs is context sensitive.
4) Information does not have to be precisely accurate in order to be relevant.

Martha is one producer in the perfectly competitive jelly industry. last year, martha and all of her competitors found themselves earning economic profits. if there is free entry and exit, what do you expect to happen to the number of suppliers in the industry and the price of jelly? the number of suppliers will increase, and the price of jelly will fall. the number of suppliers will decrease, and the price of jelly will increase. the number of suppliers will increase, and the price of jelly will increase. the number of suppliers will decrease, and the price of jelly will fall.