As George Platt Examines Markets That Might Match His Company's

As George Platt examines markets that might match his company's investment requirements, he is particularly struck by the fact that the European Community has an extensive transportation network. This network seems to draw all the member nations closer together. Which of the following critical factors for ensuring an effective economic union is Mr. Platt most likely examining when reviewing transportation networks?

A) Cultural factors
B) Trade factors
C) Political factors
D) Geographic proximity
E) Economic factors