a. the rate of unemployment fell sharply.
b. the country became more unified politically.
c. the german communist party lost many of its members.
d. the country faced severe economic problems.
The answer is d. the country faced severe economic problems.
After the end of the world war 1, the treaty of Versailles demanded heavy monetary repayments and imposed hefty fines upon the Germany along with many other military and economic sanctions.
This ultimately led to the decline of German economy. The inflation sky rocketed, unemployment increased and the unstable economy finally had a hit on the democracy and the political structure as well.