Answer:
B and D
Explanation:
B because overfishing is a impact on fishing for that country
D because it would mess up the logging industry
The answer here would be A. because free market eco is people mostly just trading goods for goods, with no government interference.
A and B is out because these undoubtedly are unique Chinese achievements. So is D. The Chinese are infamous for these things. Other achievements include gunpowder, fireworks, ect.
C is basically the answer because the chinese aren't the only race or country to do so. Many people have done it in the past before them and present in the terms of civilization. It isn't simply uniquely or originally from them.