Yoshi needs to send the gift she made for her grandson's birthday to him at college. In her neighborhood, she can choose from FedEx, UPS, or the U.S. Postal Service, but the only one within walking distance is UPS. The competitive structure of package delivery services is best described as Question 3 options: a) monopolistic competition. b) an oligopoly. c) a monopoly. d) limited competition. e) pure competition