What Evidence Supports the Conclusion That Economic Integration Clusters Around

Multiple Choice

What evidence supports the conclusion that economic integration clusters around small regions?

A) that average distance that imports and exports travel rises as economic integration increases
B) that average distance that imports and exports travel falls as economic integration increases
C) that average distance that imports and exports travel stays relatively even as economic integration increases
D) that average distance that imports and exports travel rises and falls in tandem with the business cycle