Hello there!
Your question asks which statement is not true about North Korea.
Answer: It has a strong agricultural economy
The reason why "It has a strong agricultural economy" would be the correct answer because North Korea DOES NOT have a strong agricultural economy.
The agricultural economy in North Korea is weak. The reason why their agricultural economy is weak is because of the natural disaster that they get and production isn't so high.
North Korea doesn't produce as much agricultural goods as other countries or nations in the world, and it's hard for them to keep a high level production in agriculture.
The practices that they use to farm does not help their agriculture grow, due to the fact that the way they farm is very slow.
They literally have to force people into agriculture, which means that they're suffering in the agricultural world.
I hope this helps!
Best regards,
MasterInvestor