(Choose 1 answer)
(
16017) The gravity model suggests that over time
A. world trade will eventually be swallowed by a black hole.
B. the value of trade between two countries will be proportional to the product of the two countries' GDP.
C. trade between Earth and other planets will become important.
D. trade between all countries will increase.
E. trade between neighboring countries will increase.
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Exit 10
