Correct matches:
1. charging an official with a misdeed c.impeachment
2. chosen; appointed F.nominated
3. to improve; to change; to make into a better quality e.amended
4. reverse; change to the opposite position b.overturn
5. whether the law or act is constitutional d.constitutionality
6. court determination of constitutionality of laws passed a. judicial review
The answer you're looking for is c.
Scandinavia,Northern Europe... hope it helps