The most significant challenge facing china is the country’s
a. powerful neighbors
b. growing economy
c. lack of natural resources
d. number of citizens living in poverty

The most significant challenge facing China is the country's is the number of citizens living in poverty. Although the Chinese people work a lot, they do not make enough to live on their own, and are in poverty.

D) number of citizens living in poverty

Credit to: @Chikim

+ = <3