Despite having one of the largest economies in the world (based on nominal GDP) what problem faces Japan that could affect its economic growth?

Responses
A It does not have a good coastline for trade.It does not have a good coastline for trade.
B It has a very small population of skilled labor.It has a very small population of skilled labor.
C It spends most of its tax money on the military.It spends most of its tax money on the military.
D It has a very limited supply of natural resources.

D It has a very limited supply of natural resources.