Answer:
The correct answer is D. externalities.
Explanation:
An externality is defined as that situation or group of situations that determine that a service good is not reflected at its real market price. In this example, the computer industry is so close that they do not know for sure the benefits they have when offering their goods, and it becomes an advantage in the sense that due to its close location it is possible to establish agreements to manage prices and not enter into direct market competition.