Which of the following is NOT an argument for a unitary system put forward by its supporters?

a) A unitary system assures that there is no competition between regions that would be harmful to all. b) A unitary system can better assure that basic rights are not compromised. c) A unitary system is more democratic because it is less likely to have local interests blocking the will of the majority.d) A unitary system can more easily allow a variety of policy choices to be tried out simultaneously.

c